Achmad Maswan

Tracing, tracking and testing are keys in fighting COVID-19 pandemic. At the start of the pandemic in Indonesia, the capacity to test with RT-PCR methods as the golden standard was still quite low. BPPT, through TFRIC-19, developed MBSL-2 to increase the capacity of COVID-19 PCR Test. This Mobile Bio-Safety Level-2 (MBSL-2) is equipped with HVAC system which has the main function of providing comfort and safety for testing personnel as well as safety for the testing process. This MBSL-2 also provides safety for the environment in which MBSL-2 is placed from contamination of the SARS-Cov-2 virus which may be released during the PCR analysis process. There are several variants of the Heating, Ventilating and Air Conditioning (HVAC) MBSL-2 that have been built and operated. The requirement and the design result for MBSL-2 has been discussed in this paper. This HVAC system has to be able to cover cooling load of 2459 W. This MBSL-2 HVAC system has been designed to complement the RT-PCR ...

Tracing, tracking and testing are keys in fighting COVID-19 pandemic. At the start of the pandemic in Indonesia, the capacity to test with RT-PCR methods as the golden standard was still quite low. BPPT, through TFRIC-19, developed MBSL-2 to increase the capacity of Covid-19 PCR Test. This Mobile Bio-Safety Level-2 (MBSL-2) is equipped with HVAC system which has the main function of providing comfort and safety for testing personnel as well as safety for the testing process. This MBSL-2 also provides safety for the environment in which MBSL-2 is placed from contamination of the SARS-CoV-2 virus which may be released during the PCR analysis process. There are several variants of the Heating, Ventilating and Air Conditioning (HVAC) MBSL-2 that have been built and operated. The requirement and the design result for MBSL-2 has been discussed in this paper. This HVAC system has to be able to cover cooling load of 2459 W. This MBSL-2 HVAC system has been designed to complement the RT-PCR ...

Pengeringan dengan menggunakan pengering beku vakum mempunyai banyak kelebihan, tetapi mempunyai kendala di dalam waktu proses yang lama maupun konsumsi energinya yang tinggi. Inovasi untuk mengurangi waktu pembekuan adalah dengan menggabungkan antara pendinginan dan pembekuan vakum, tetapi produk yang dihasilkan akan mengalami penurunan kualitas. Alternatif metode didalam pembekuan vakum adalah dengan melakukan pemvakuman setelah produk terbentuk lapisan es. Sedangkan inovasi didalam mengurangi waktu proses pengeringan adalah dengan menaikkan temperatur permukaan produk dengan memanfaatkan panas terbuang dari kondenser. Model simulasi numerik beda hingga satu dimensi dengan kondisi batas tetap dan bergerak dikembangkan untuk memprediksikan pengaruh temperatur dan tekanan ruang serta ketebalan es saat dilakukan pemvakuman terhadap waktu proses pengering beku vakum. Hasil simulasi menunjukkan dengan memperkecil tekanan ruang pengering, menaikkan temperatur ruang pengering serta mempe...

: One of important procedures in doing the design of air conditioning in cabin of carrying military personnel vehicle is to calculate or estimate cooling loads. In the cooling load estimation procedure, depth survey is needed in order to do thorough analysis of the sources so that the cooling load estimation can be determined from the type of equipment and energy used. This paper present results of a calculation of a heat exchanger of a military personnel vehicle. Based on the results of the thermal load calculations obtained in compliance with the parameters have been determined. Keywords : Heat, Heat Exchange, Air Conditions, Cooling Load