Thermal comfort is an essential parameter for the well-being of occupants in buildings. This paper aims to analyze thermal a 400-person capacity-art center auditorium at Universitas Indonesia. The physical parameters evaluated include temperature and humidity according both ASHRAE-55-2010 National SNI 03-6572-2001 standards on conditions. air conditioning system utiliz...

Most of the food transport trucks in Sothern Africa are equipped with refrigeration and air conditioning systems filled fluorocarbon refrigerants such as R404A to facilitate heat transfer process. These synthetic chemicals have high potential cause global warming damage ozone layer. Currently, natural considered alternatives these man-made mitigate some environmental risks. The substances that ...

ARTICLE INFO a The temperature of earth is increasing drastically in the past few years due to which water temperature is also increasing. Water cooler is a device used to cool the temperature of water so that it is suitable for drinking purpose. This system works on the principle of vapour compression refrigeration system. CFC 22 is currently used in the system, but because of its high GWP and...

This paper presents a comparable evaluation of R600a (isobutane), R290 (propane), R134a, R22, R410A, and R32 in an optimized finned-tube evaporator, and analyzes the impact of evaporator effects on the system coefficient of performance (COP). The study relied on a detailed evaporator model derived from NIST’s EVAP-COND simulation package and used the ISHED1 scheme employing a non-Darwinian lear...

Efficiency is becoming an increasingly important issue in cooling systems. It to use micro channel heat exchangers order increase the system efficiency. In this study, performance analysis of refrigerants used supermarkets was tested experimentally. Thermodynamic analyses were examined. The compatibility R290 and R449A with environment has been experimentally observed. Energy, exergy, environme...

Whilst R290 is currently used to a limited extent in room air conditioners there desire for wider application due its excellent performance and negligible global warming potential. The product standard IEC 60335–2–40 specifies requirements limit the allowable refrigerant charge such way that it obstructs use of R290. Airflow an indoor unit can be dilute leak, enabling substantially greater quan...

Several media report highlight on that the pharmaceutical companies require ultra-low temperatures -80°C to transport and store its COVID-19 vaccines. This research presents thermodynamic analysis cascade refrigeration system (CRS) with several refrigerant pairs which are R32/R170, R123/R170, R134a/R170, R404A/R170, R407c/R170, R410/R170, hydrocarbon (HC) pair Propane/Ethane, namely R290/R170. ...

The refrigerant used in heat pumps significantly influences the overall system performance. However, selecting a proper is no trivial matter due to pumps’ sensitivity selected flowsheet, components, and operating conditions. Herein, holistic approach that covers all these interdependencies simultaneously considering fluid‐dependent compressor efficiencies, point. Six low global warming potentia...