What is RefrigerantA refrigerant is a substance or mixture, used in a refrigeration cycle. Generally, It undergoes phase transitions from a liquid to a gas and back again. Types of Refrigerant: 1. Primary Refrigerant:Primary refrigerant directly take part in refrigeration, Eg Freon ( R11, R22, R32, R407C, R134a etc), Ammonia, water. Theses refrigerants directly absorb …
Chiller performance depends on the various factors like condenser temperature, evaporation temperature, compressor loading, refrigerant quantity etc. One of the major factors which impact the chiller performance is condenser saturation temperature. Condenser saturation temperature depends on various factors like Variation in cooling water temperature. cooling water temperature depends upon performance of cooling tower and atmospheric …
Impact of condensing temperature in refrigeration system Read More »
Ensure correct utility for process: If a process is capable to run on 5 Deg C never use 1 Deg C Chilled water, lowering every 1 Deg C will increase power consumption from 2.5 to 4% in compressor power. During Design insure proper IPLV / NPLV selection : Chillers/ refrigeration system never operates on full …
Area of Improvement: 350 TR Screw chiller, with refrigerant as R134a was in operation. Chiller inlet and outlet temperature was designed for 12 deg C and 7 Deg C. variation in cooling water temperature was from 22 deg C to 32 deg C. Cooling tower water treatment program was well maintained. Condenser cleaning procedure was …
Case Study: Inline condenser cleaning system for 350 TR chiller. Read More »
In shell and tube heat exchanger, especially where the cooling media is cooling water, there is higher probability of fouling. Therefore periodic heat exchanger cleaning is required to improve the heat transfer of the heat exchanger. In general heat exchanger’s are cleaned either chemically or mechanically, both type of cleaning requires shutdown of the heat …
Area of Improvement: In a process plant 60% of condensate is recovered at approx 90 Deg C, remaining condensate was contaminated as it is being used in steam ejectors, direct heating in process and multi utility reactor therefore it was not recovered. Observation: 40% of feed water of approx 12 KL/hr was fed to deareator …
Heat pump is a device used to transfer heat from source to sink with the use of small energy. In simple words, Heat pump absorbs heat from cold zone and transfers to the hot zone. Common type of heat pumps is based on refrigeration system which absorbs heat at evaporator and recovered at condenser. While …
Area of Improvement: 500TR Chilled water system was having primary and secondary circuits for circulation of chilled water through Chiller and plant. Observation: In a typical chilled water/ brine system, Primary circuits are used circulate water/ brine though chiller and reduce temperature of chilled water / brin., further this chilled water is transferred to the …
Case Study: Pumping power reduction at chilled water System Read More »
What is IPLV or NPLV ? IPLV stands for integrated part load value and NPLV standfor non standard part load efficiency. IPLV or NPLV is used to evaluate efficiency of chiller at different loading condition. The calculation formulae of IPLV and NPLV is same. The only difference between IPLV and NPLV is that IPLV is …
Shell and tube condensers are most widely used condensers for the condensation of high pressure refrigerant of refrigeration system with cooling water. In countries where cooling water is available at above 30 Deg C, there is possibility of energy saving with the use of Evaporative Condenser.In general cooling tower is designed for 4 Deg C …
