Refrigeration is the process of heat removal by lowering temperature beyond atmospheric temperature. For producing refrigerating effect various methods are used. We shall be discussing various refrigeration system in this article. Two important terms used in refrigeration system is TR(Ton of Refrigeration)and COP ( Coefficient of performance), TR is used to define the capacity of …
Most of the cooling appliances works on vapor compression refrigeration system may it is your air conditioners, Refrigerator, car cooling system, industrial chillers. All vapor compression refrigeration system requires refrigerant for generating cooling effect. These refrigerants changes phases from liquid to vapor to provide cooling effect. In this article we will discuss about refrigerant and …
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. This problem of periodic cleaning can be overcome by Inline heat exchanger cleaning system In general heat exchanger’s are …
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 …
IPLV and NPLV, Efficiency for the real world !!! Read More »
