CN104620967A - Solar photovoltaic heat storage type constant temperature bioreactor - Google Patents

Abstract

The invention discloses a solar photovoltaic thermal storage type constant temperature bioreactor, comprising a solar energy storage device, a temperature control device, a phase change box and a reactor, the reactor is arranged in the phase change box, and the solar energy storage The device is electrically connected with the phase change box body, and the signal output end of the temperature control device is connected with the signal input end of the solar power storage device. The invention automatically adjusts the constant temperature of the thermal environment in the reactor according to the different requirements of the thermal environment required in different stages of the reaction process through the solar photovoltaic heat storage insulation layer, so as to meet the suitable thermal environment required for biological growth or chemical reaction in the reactor .

Description

A solar photovoltaic regenerative constant temperature bioreactor

technical field

The invention relates to the technical field of constant-temperature reactors, in particular to a constant-temperature bioreactor with a solar photovoltaic phase-change heat storage insulation layer.

Background technique

A constant temperature reactor is an industrial device that can provide a constant temperature or a small change in the temperature of the thermal environment for the reaction process in it. It is widely used in constant temperature incubation, constant temperature bean sprouts cultivation room, methane constant temperature fermentation, constant temperature drying, constant temperature storage and other fields. When different thermal environments are required for chemical or biological reactions at different times, the existing constant temperature reactors cannot meet this demand.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention automatically adjusts the constant temperature of the thermal environment in the reactor according to the different requirements of the thermal environment required at different stages of the reaction process through the solar photovoltaic heat storage insulation layer to meet the requirements of the reactor. A suitable thermal environment is required for the growth or chemical reaction of endogenous organisms.

Technical scheme: in order to achieve the above object, the technical scheme of the present invention is as follows:

A new type of solar energy constant temperature bioreactor, comprising a solar panel, an electrical storage device, a temperature control device, a phase change box and a reactor, the reactor is arranged in the phase change box, the electrical storage device and the phase change The box body is electrically connected, the signal output end of the temperature control device is connected to the signal input end of the power storage device, and the solar battery panel is electrically connected to the Xu electric device. Intelligent constant temperature reaction is realized through power storage device, temperature control device, phase change box and reactor.

Further, the phase change box body includes a phase change heat preservation layer and a thermal insulation layer, and the phase change heat preservation layer includes an inner phase change heat preservation layer and an outer phase change heat preservation layer of a sealed box structure, and the reactor is set In the inner phase-change thermal insulation layer, an outer phase-change thermal insulation layer is arranged outside the inner phase-change thermal insulation layer, and a thermal insulation layer is arranged outside the outer phase-change thermal insulation layer, and the outer phase-change thermal insulation layer The phase change temperature of the phase change material of the layer is higher than the phase change temperature of the phase change material of the inner phase change insulation layer.

Further, the inner phase change insulation layer and the outer phase change insulation layer in the phase change insulation layer respectively include phase change materials, two conductive sheets and a number of electric resistance wires, and two of each electric resistance wire The ends are respectively fixed between the two conductive sheets, the phase change material is filled in the inner phase change insulation layer or the outer phase change insulation layer, and the two conductive sheets are connected to the power storage device through wires. The conductive sheet is one of copper strips, aluminum strips or iron sheets, and an insulating material is wrapped on the outside of the conductive sheet.

Further, the conductive sheet in the inner phase-change thermal insulation layer is connected to the electrical storage device through a No. 1 selective switch, and the conductive sheet in the outer phase-change thermal insulation layer is connected to the electrical storage device through two The No. 1 selectable switch is connected, and the No. 1 selectable switch and the No. 2 selectable switch can be connected simultaneously or non-simultaneously. When the No. 1 selectable on switch is connected, the low temperature response is satisfied; when the No. 2 selectable on switch is connected or both No. 1 and No. 2 selectable on switches are connected simultaneously, the high temperature response is satisfied.

Further, the phase change material in the inner phase change insulation layer is one or more mixtures of n-tetradecyl paraffin to n-eicosyl paraffin; the phase change material in the outer phase change insulation layer is One or more mixtures of n-17-carbon paraffin wax to n-27-carbon paraffin wax; the phase change material in the thermal insulation layer is rigid polyurethane foam, polystyrene foam and polyethylene plastic foam One of.

Further, the thickness δ of the thermal insulation layer is 100 mm to 200 mm, and the mass of the phase change material filled inside the inner phase change thermal insulation layer and the outer phase change thermal insulation layer is m ₁ and m ₂ , m ₁ and m ₂ Satisfies the following formula:

$m_{1}Q=\frac{\mathrm{\Δt}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}+\frac{{\mathrm{\λ}}_2}{{\mathrm{\δ}}_2}}\mathrm{AT}$ and $m_{2}Q=\frac{\mathrm{\ΔT}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}}\mathrm{AT};$

Among them, m ₁ and m ₂ are the mass of the phase change material filled in the inner phase change insulation layer and the outer phase change insulation layer; Q is the latent heat per unit mass of the phase change material; T is the latent heat release time; A is the inner layer The surface area of the phase change insulation layer or the outer phase change insulation layer box; Δt is the temperature difference between the melting point of the phase change material and the ambient temperature; h _o is the heat transfer coefficient of the inner phase change insulation layer or the outer surface of the outer phase change insulation layer; λ is The thermal conductivity of the thermal insulation material of the thermal insulation layer; δ is the thickness of the thermal insulation layer; λ ₂ is the thermal conductivity of the phase change material in the outer phase change thermal insulation layer; δ ₂ is the thickness of the outer phase change thermal insulation layer.

Beneficial effect: advantage of the present invention:

A new type of solar energy constant temperature bioreactor according to the present invention comprises two layers of phase change thermal insulation layer and one layer of thermal insulation layer, wherein the phase change thermal insulation layer is arranged between the reactor and the thermal insulation layer, wherein the phase change thermal insulation layer In order to seal the box body, electric resistance wires are arranged inside and filled with suitable phase change materials, which can supplement the heat of the phase change insulation layer, so that the phase change material is always at the phase change temperature, so that the phase change insulation layer and the reactor The room is approximately adiabatic, which realizes smaller temperature fluctuations in the reactor, and the temperature is approximately constant, thereby realizing a constant temperature reaction process. At the same time, according to the reaction temperature required in the reactor, you can choose to turn on the phase change insulation layer with a slightly lower temperature to obtain a lower reaction temperature, or you can choose to turn on a phase change insulation layer with a slightly higher temperature to obtain a slightly higher temperature. The reaction temperature, or you can choose to switch on the phase change insulation layer with slightly higher temperature and slightly lower temperature at the same time to obtain a higher reaction temperature.

Description of drawings

Accompanying drawing 1 is the solar energy constant temperature bioreactor system diagram of the present invention.

Accompanying drawing 2 is the inner structural diagram of phase-change insulation layer sealed box body.

Accompanying drawing 3 is insulation material arrangement diagram.

Labels: 1-reactor 2-inner phase change insulation layer 3-outer phase change insulation layer 4-thermal insulation layer 5-solar panel 6-solar power storage device 7-wire 8-temperature control device 9-filling Paraffin hole 10-conductive sheet 11-point thermal resistance wire 12-insulating material 13-No. 1 selection switch 14-No. 2 selection switch.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in accompanying drawing 1, a kind of novel solar energy constant temperature bioreactor comprises solar power storage device, temperature control device 8, phase change box body and reactor 1, and described solar power storage device comprises solar cell panel 5 and storage Electric device 6, the reactor 1 is arranged in the phase change box body, the solar power storage device is electrically connected to the phase change box body, the signal output end of the temperature control device 8 is connected to the signal input end of the power storage device 6 , the solar cell panel is electrically connected to the electrical device 6 . The intelligent constant temperature reaction is realized through the solar power storage device, the temperature control device 8 , the phase change box and the reactor 1 .

The phase change box body includes a phase change insulation layer and a thermal insulation layer 4, and the phase change insulation layer includes an inner phase change insulation layer 2 and an outer phase change insulation layer 3 of a sealed box structure, and the reactor 1 It is arranged in the inner phase change heat preservation layer 2, the outer phase change heat preservation layer 3 is arranged outside the inner layer phase change heat preservation layer 2, and the heat insulation heat preservation layer 4 is arranged outside the outer phase change heat preservation layer 3, and the The phase change temperature of the phase change material of the outer phase change heat preservation layer 3 is greater than the phase change temperature of the phase change material of the inner phase change heat preservation layer 2 .

As shown in accompanying drawing 2, the inner layer phase change insulation layer 2 and the outer layer phase change insulation layer 3 in the phase change insulation layer include phase change materials, two conductive sheets 10 and some electric resistance wires 11 respectively, so The electric resistance wire 11 is made of carbon fiber, and the two ends of each electric resistance wire 11 are respectively arranged between two conductive sheets 10, and the phase change material is filled in the inner phase change insulation layer 2 or the outer phase change Inside the insulation layer 3 , the two conductive sheets 10 are both connected to the power storage device 6 . As shown in FIG. 3 , the conductive sheet 10 is one of copper strips, aluminum strips or iron sheets, and an insulating material 12 is wrapped on the outside of the conductive sheet 10 .

The conductive sheet 10 in the inner phase-change thermal insulation layer 2 is connected to the electrical storage device 6 through a No. 1 selectable switch 13, and the conductive sheet 10 in the outer phase-change thermal insulation layer 3 is connected to the electrical storage device 6 The No. 1 selectable switch 14 is connected between them, and the No. 1 selectable switch 13 and the No. 2 selectable switch 14 can be turned on simultaneously or non-simultaneously. According to the reaction temperature required in the reactor 1, the switch 13 can be selected to be connected to No. 1, and the inner layer phase change insulation layer 2 with a slightly lower temperature can be connected to obtain a lower reaction temperature, or No. 2 can be selected to be connected. Select the switch 14 to connect to the slightly higher outer layer phase change insulation layer 3 of the temperature, so as to obtain a moderate reaction temperature, or you can choose to connect the first selectable switch 13 and the second selectable switch 14 at the same time to connect the temperature Slightly higher and lower inner phase-change thermal insulation layer 2 and outer phase-change thermal insulation layer 3 obtain higher reaction temperature.

The electric resistance wire 11 is used to convert the electric energy provided by the solar panel 5 into heat energy during the day, and store it as the latent heat energy of the phase change material. The temperature of the phase change material is at the phase change temperature. When the temperature is higher than the phase change temperature, The temperature control device 8 disconnects the power supply of the power storage device 6, and stores excess electric energy in the power storage device 6; at night without sunlight, the phase change material begins to change from liquid to solid state, and releases latent heat; when the latent heat of the phase change material After complete release, that is, when the phase-change material is in a solid state, and its temperature is lower than the phase-transition temperature, turn on the temperature control device 8 to connect the power storage device 6 and start supplementary heat, so that the phase-change material begins to change from solid to liquid , maintain its phase change temperature until the phase change material is completely transformed into a liquid state.

The phase change material in the inner phase change insulation layer 2 is one or more mixtures of n-tetradecyl paraffin to n-eicosan paraffin; the phase change material in the outer phase change insulation layer 3 is positive One or more mixtures of seventeen-carbon paraffin wax to n-heptagon carbon paraffin wax; the phase change material in the thermal insulation layer 4 is rigid polyurethane foam, polystyrene foam and polyethylene plastic foam One of a kind.

The thickness δ of the thermal insulation layer 4 is 100 mm to 200 mm, and the mass of the phase change material filled inside the inner phase change thermal insulation layer 2 and the outer phase change thermal insulation layer 3 is m ₁ and m ₂ , m ₁ and m ₂ Satisfy the following formula:

$m_{1}Q=\frac{\mathrm{\Δt}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}+\frac{{\mathrm{\λ}}_2}{{\mathrm{\δ}}_2}}\mathrm{AT}$ and $m_{2}Q=\frac{\mathrm{\ΔT}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}}\mathrm{AT};$

Among them, m ₁ and m ₂ are the mass of the phase change material filled inside the inner phase change insulation layer 2 and the outer phase change insulation layer 3; Q is the latent heat per unit mass of the phase change material; T is the latent heat release time; A is The box body surface area of the inner phase change insulation layer 2 or the outer phase change insulation layer 3; Δt is the temperature difference between the melting point of the phase change material and the ambient temperature; h _o is the outer surface of the inner phase change insulation layer 2 or the outer phase change insulation layer 3 Heat transfer coefficient; λ is the thermal conductivity of the thermal insulation material of the thermal insulation layer 4; δ is the thickness of the thermal insulation layer 4; λ ₂ is the thermal conductivity of the phase change material in the outer phase change thermal insulation layer 3; δ ₂ is the phase change of the outer layer The thickness of the insulation layer 3.

Specific examples:

The constant temperature reactor of the present invention is a small constant temperature bean sprouts incubator, and the cultivation chamber can be a cube. The suitable growth temperature of bean sprouts is 20-28°C, so the inner layer phase change insulation layer 2, the outer layer phase change insulation layer 3 and the heat insulation layer (hard polyurethane insulation layer) are sequentially arranged on the outside of the reactor 1, wherein, The inner phase change material of the inner phase change insulation layer 2 is n-heptadecanyl paraffin (melting point 21.4°C), and the inner phase change material of the outer phase change insulation layer 3 is n-octadecyl paraffin (melting point 28.2°C). Among them, several carbon fiber electric resistance wires 11 are evenly arranged in each phase change heat preservation layer, and the power thereof is selected according to the heat load. When there is sunshine during the day, the electric energy generated by the solar cell panel 5 is supplied to the electric resistance wire 11, and the electric energy generates heat energy, which is stored in the phase change material (paraffin), and the phase change material (paraffin) absorbs latent heat; when there is no sunlight at night, The phase change material (paraffin) begins to release latent heat, thereby maintaining a constant temperature inside the bean sprout incubator. Because the daytime ambient temperature is higher than the nighttime temperature, so during the daytime, No. 2 switch 14 can be connected to heat the outer layer phase-change insulation layer 3, so that the bean sprouts cultivator is at a slightly higher cultivation temperature, and more quickly Growth; in the nighttime period, for reducing the heat dissipation load of the bean sprouts cultivator, connect No. 1 switch 13, the inner layer phase change insulation layer 2 is heated, so that the bean sprouts cultivator is in slightly lower cultivation temperature. This can effectively regulate the load of the day. At the same time, when the phase change material (paraffin) absorbs or releases latent heat, the temperature is always kept at the phase change temperature, and the bean sprout incubator can also maintain the constant temperature cultivation process of bean sprouts.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (7)

1. a novel solar constant temperature bio-reactor, it is characterized in that: comprise solar panel (5), electrical storage device (6), attemperating unit (8), phase transformation box body and reactor (1), described reactor (1) is arranged in phase transformation box body, described electrical storage device (6) is electrically connected with phase transformation box body, the signal output part of described attemperating unit (8) is connected with the signal input part of electrical storage device (6), and described solar panel (5) is electrically connected with electrical storage device (6).

2. a kind of novel solar constant temperature bio-reactor according to claim 1, it is characterized in that: described phase transformation box body comprises phase-transition heat-preserving layer and thermal insulating warm-keeping layer (4), described phase-transition heat-preserving layer comprises internal layer phase-transition heat-preserving layer (2) and the outer phase-transition heat-preserving layer (3) of sealing box body structure, described reactor (1) is arranged in internal layer phase-transition heat-preserving layer (2), described internal layer phase-transition heat-preserving layer (2) is outside equipped with outer phase-transition heat-preserving layer (3), described outer phase-transition heat-preserving layer (3) is outside equipped with thermal insulating warm-keeping layer (4), and the phase-change material phase transition temperature of described outer phase-transition heat-preserving layer (3) is greater than the phase-change material phase transition temperature of internal layer phase-transition heat-preserving layer (2).

3. a kind of novel solar constant temperature bio-reactor according to claim 2, it is characterized in that: in the internal layer phase-transition heat-preserving layer (2) in described phase-transition heat-preserving layer and outer phase-transition heat-preserving layer (3), comprise phase-change material respectively, two conducting strips (10) and some electrothermal resistance silks (11), the two ends of described every root electrothermal resistance silk (11) are separately fixed between two conducting strips (10), described phase-change material is filled in internal layer phase-transition heat-preserving layer (2) or outer phase-transition heat-preserving layer (3), two conducting strips (10) are all connected by electric wire (7) with electrical storage device (6).

4. a kind of novel solar constant temperature bio-reactor according to claim 3, it is characterized in that: described conducting strip (10) is copper bar, aluminum strip or iron plate one wherein, and be enclosed with insulating materials (12) in conducting strip (10) outside.

5. a kind of novel solar constant temperature bio-reactor according to claim 4, it is characterized in that: the conducting strip (10) in described internal layer phase-transition heat-preserving floor (2) selects turn on-switch (13) to be connected with between electrical storage device (6) by No. one, conducting strip (10) in described outer phase-transition heat-preserving floor (3) selects turn on-switch (14) to be connected with between electrical storage device (6) by No. two, described No. one select turn on-switch (13) and No. two selections turn on-switch (14) can while or non-concurrent connection.

6. a kind of novel solar constant temperature bio-reactor according to claim 2, is characterized in that: the phase-change material in described internal layer phase-transition heat-preserving layer (2) is one or more mixtures in positive 14 carbon paraffin ~ positive 20 carbon paraffin; Phase-change material in described outer phase-transition heat-preserving layer (3) is one or more mixtures in positive 17 carbon paraffin ~ positive 27 carbon paraffin etc.; Phase-change material in described thermal insulating warm-keeping layer (4) is the one in rigid polyurethane foam plastics, polystyrene foam plastics and vinyon foam.

7. a kind of novel solar constant temperature bio-reactor according to claim 6, it is characterized in that: the thickness δ of described thermal insulating warm-keeping layer (4) is 100mm ~ 200mm, the phase-change material quality that described internal layer phase-transition heat-preserving layer (2) and outer phase-transition heat-preserving layer (3) inside are filled is m ₁and m ₂, m ₁and m ₂meet following formula:

$m_{1}Q=\frac{\mathrm{\Δt}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}+\frac{{\mathrm{\λ}}_2}{{\mathrm{\δ}}_2}}\mathrm{AT}$ With $m_{2}Q=\frac{\mathrm{\Δt}}{\frac{1}{h_o}+\frac{\mathrm{\λ}}{\mathrm{\δ}}}\mathrm{AT};$

Wherein, m ₁, m ₂for the phase-change material quality that internal layer phase-transition heat-preserving layer (2) and outer phase-transition heat-preserving layer (3) inside are filled; Q is the latent heat amount of phase-change material unit mass; T is the latent heat treatment time; A is that internal layer phase-transition heat-preserving layer (2) or outer phase-transition heat-preserving layer (3) box surface amass; Δ t is phase-change material fusing point and the environmental temperature temperature difference; h _ofor internal layer phase-transition heat-preserving layer (2) or outer phase-transition heat-preserving layer (3) the outer surface coefficient of heat transfer; λ is the thermal conductivity factor of the insulation material of thermal insulating warm-keeping layer (4); δ is the thickness of thermal insulating warm-keeping layer (4); λ ₂for the interior phase-change material thermal conductivity factor of outer phase-transition heat-preserving layer (3); δ ₂for the thickness of outer phase-transition heat-preserving layer (3).