CN100404974C - Air-water direct contact air conditioning system - Google Patents

Abstract

The invention relates to an air-water direct contact air conditioning system, which belongs to the energy field. It is characterized in that: the air-conditioning system includes a compressor 1, an evaporator 3, an expansion valve 5, a fan 15, a water-cooled condenser 6 and a set of air-water heat exchange system, and the air-water heat exchange system includes a condenser 6, a water pump 7. Indirect evaporative cooler 9, fan 14, water supply pipe 16; one end of the evaporator is connected to one end of the compressor and the condenser through a pipeline, and the other end is connected to the other end of the expansion valve and the condenser through a pipeline; The evaporator lowers the temperature of the air-conditioning inlet air 2 sent by the fan to the outlet air 4 and sends it into the room: the air inlet of the indirect evaporative cooler is connected to the outdoor air 11 , and the air at the outlet is 8 and 10 . The invention utilizes the evaporative cooling process in which air and water are in direct contact to reduce the condensation temperature of the air conditioner, thereby improving the energy efficiency of the air conditioner. At the same time, the evaporative cooling process can operate independently to meet the air conditioner function under certain climatic conditions.

Description

Air-water direct contact air conditioning system

technical field

The invention relates to an energy-saving air-conditioning system, which belongs to the technical field of energy.

Background technique

The widely used air conditioner is air-cooled, that is, the outdoor wind is used to cool the condenser and take away the heat of condensation. Since the heat exchange process of the condenser requires a heat exchange temperature difference of more than 10°C, the condensation temperature of the air-conditioning and refrigeration system should be higher than the dry bulb temperature of the outdoor air by more than 10°C. According to the basic principle of the refrigeration cycle, if the condensation temperature can be lowered, the power consumption of the air conditioner will be saved.

The technology involved in the present invention is a method for reducing the condensing temperature of the air conditioner by utilizing the evaporative cooling process in which air and water are in direct contact, thereby improving the energy efficiency of the air conditioner. Moreover, the evaporative cooling process can operate independently to meet the air conditioning function under certain climatic conditions. In this case, the compressor of the air conditioner may not work, but directly utilizes the evaporative cooling process for cooling.

Contents of the invention

The object of the present invention is to provide an air-water direct contact air-conditioning system that can reduce the condensation temperature and save the power consumption of the air-conditioning.

An air-water direct contact air-conditioning system proposed by the present invention is characterized in that: the air-conditioning system includes a compressor 1, an evaporator 3, an expansion valve 5, a fan 15, a water-cooled condenser 6 and a set of air-water heat exchange system, the air-water heat exchange system includes a water-cooled condenser 6, a water pump 7, an indirect evaporative cooler 9 capable of producing cold water lower than the outdoor air wet-bulb temperature, a fan 14, and a water supply pipe 16; one end of the evaporator 3 passes through The pipeline is connected to one end of the compressor 1 and the condenser 6, and the other end is connected to the other end of the expansion valve 5 and the condenser 6 through a pipeline; The wind 4 is sent into the room: the air inlet of the indirect evaporative cooler 9 is connected to the outdoor air 11 , and the air at the outlet is 8 and 10 . The air of air outlet 8 also can be directly sent into indoor.

In the above-mentioned air-conditioning system, it is characterized in that: in the air-conditioning season when the outdoor air enthalpy is relatively high, the indirect evaporative cooler 9 works, and the cold water 12 generated by the water pump 7 that is lower than the outdoor wet bulb temperature flows through The air conditioner condenser 6 takes away the condensation heat of the air conditioner; the heated water 13 flowing out of the condenser 6 flows back to the indirect evaporative cooler 9 to be lowered in temperature through the indirect evaporative cooling process to complete the cycle; the air conditioner indoor evaporator 3 converts the air conditioner The temperature of the air intake 2 is reduced to 4 and sent into the room.

In the above-mentioned air-conditioning system, it is characterized in that: when the outdoor enthalpy value is low and indoor air conditioning is required, the cooled air in the process of indirect evaporative cooling is drawn out from the air outlet 8, and the air outlet 8 is switched by a valve In the room, the compressor (1) and the indoor blower (15) are turned off, and the indirect evaporative cooling fan (14) and the water pump (7) are turned on, so as to utilize natural energy to realize the air-conditioning function.

Description of drawings

，空气

，制冷剂←。Fig. 1 is a schematic diagram of the air-water direct contact air conditioning system of the present invention. Of which: water

,Air

, Refrigerant ←.

Detailed ways

Below in conjunction with accompanying drawing, technical scheme of the present invention is described further:

Please see Figure 1. Compressor 1, air inlet 2, evaporator 3, air outlet 4, expansion valve 5, condenser 6, water pump 7, cooling air outlet 8, indirect evaporative cooler 9, outlet air 10, outdoor air 11, cold water 12, Water 13 after the temperature rise, indirect evaporative cooling fan 14,15, water supply pipe 16.

The air conditioner includes a compressor 1, an evaporator 3, an expansion valve 5 (the above are the same as the traditional air conditioner), and a set of air-water heat exchange system, including a water-cooled condenser 6 and a water pump 7, which can generate a temperature lower than the outdoor air wet bulb temperature. The indirect evaporative cooler 9 and the corresponding pipelines and fans 14, 15 and the water supply pipe 16 of the indirect evaporative cooling process constitute.

It works as follows:

In the air-conditioning season when the enthalpy of the outdoor air is high, the indirect evaporative cooler 9 works, and the cold water 12 produced by the water pump 7 that is lower than the outdoor wet bulb temperature is powered by the water pump 7 and flows through the air-conditioning condenser 6 to take away the condensation heat of the air-conditioning; it flows out of the condenser The heated water 13 of 6 flows back to the indirect evaporative cooler to be lowered in temperature through the indirect evaporative cooling process to complete the cycle. The evaporator 3 in the air-conditioning room reduces the temperature of the air-conditioning intake air 2 to 4 and sends it into the room to complete the air-conditioning function. The inlet air of the indirect evaporative cooling process is outdoor air 11 , and the outlet air is 10 . The air conditioner compressor works at a lower condensing temperature than the traditional air-cooled air conditioner, and has higher cooling efficiency.

When the outdoor enthalpy is low and air conditioning is needed indoors, the compressor may not be turned on during the air conditioning process, and the cooled air in the indirect evaporative cooling process is drawn out from 8 o'clock, and the air at 8 o'clock is switched to the room through the valve. Due to the low outdoor enthalpy, 8 o'clock air can meet the air supply requirements of the air-conditioning room and take away the indoor heat and humidity load. In this case, the compressor 1 and the indoor blower 15 are not turned on, and the indirect evaporative cooling fan 14 and the water pump 7 are turned on, so that the air-conditioning function is realized by using natural energy, which greatly saves energy consumption.

Claims (3)

1. An air-water direct contact air-conditioning system, characterized in that: the air-conditioning system contains a compressor (1), an evaporator (3), an expansion valve (5), an indoor blower (15) and a set of air-water A heat exchange system, the air-to-water heat exchange system includes a water-cooled condenser (6), a water pump (7), an indirect evaporative cooler (9) capable of producing cold water lower than the wet-bulb temperature of the outdoor air, and an indirect evaporative cooling fan (14) , replenishing water pipe (16); One end of described evaporator (3) links to each other with one end of compressor (1), water-cooled condenser (6) by pipeline, and the other end is connected with expansion valve (5), water-cooled condenser ( 6) are connected to the other end; the evaporator (3) reduces the temperature of the air-conditioning inlet air (2) sent in by the indoor blower (15) to the outlet air (4), and sends it into the room; the indirect evaporative cooler ( 9) The air inlet end is connected with outdoor air (11), and the outlet end has two air outlets (8, 10), wherein the air of one air outlet (8) can be directly sent into the room. 2. The air-conditioning system according to claim 1, characterized in that: in the air-conditioning season when the outdoor air enthalpy is relatively high, the indirect evaporative cooler (9) works, and the cold water (12) produced is lower than the outdoor wet-bulb temperature Powered by the water pump (7), it flows through the air-conditioning water-cooled condenser (6) to take away the condensation heat of the air-conditioning; the heated water (13) flowing out of the water-cooled condenser (6) flows back to the indirect evaporative cooler (9) through the indirect The temperature of the evaporative cooling process is lowered to complete the cycle; the evaporator lowers the temperature of the air-conditioning inlet air until the outlet air (4) is sent into the room. 3. The air conditioning system according to claim 1, characterized in that: when the outdoor enthalpy is low and the room needs air conditioning, the cooled wind in the indirect evaporative cooling process is drawn out from an air outlet (8), The air drawn from the air outlet (8) is switched to the room through the valve, the compressor (1) and the indoor blower (15) are turned off, and the indirect evaporative cooling fan (14) and water pump (7) are turned on to realize the air conditioning function by using natural energy .

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