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Although one 100 HP chiller was switched off permanently, the power saving is 21 kW only. This is because of the fact that the difference in specific power consumption before and after modifications is the deciding factor for energy savings. 5 lakhs θ Actual Investment: Very small θ Payback: Immediate 54 CASE STUDY 2: MATCHING COMPRESSOR CAPACITY TO LOAD BY SPEED VARIATION Speed Reduction Of Compressors To Match Actual Plant Refrigeration Load and Improve Heat Exchanger Heat Transfer Efficacy Equipment Refrigeration compressor Name of Industry/sector Clarisis Organics- Baroda/Chemicals Details of Measure The company situated near Baroda manufactures benzene derivatives.

However, variable speed drives may be installed to optimize the flow of pumps depending on the load. Don’t oversize refrigeration plants unnecessarily, it may cost more to buy and run! Purchase only high efficiency machines, even at a premium. Use larger heat transfer areas of evaporators and condensers. Consider realistic fouling factors based on water quality and general immediate environment. It should be noted that energy efficient refrigeration systems always operate with smaller temperature lifts (or compression ratios), resulting in lower discharge temperatures and the resultant benefits of lower energy consumption, lower maintenance costs and better reliability.

Both higher or lower oil levels can damage the condenser. Drop in oil level implies leaks or entrapment of oil elsewhere in the system. Excessive oil can result in film formation in heat exchangers 42 can reduce heat transfer very significantly and increase the operating time and energy consumption. Pumping Systems Some of the methods of reducing the energy consumption is pumping systems are: ♣ ♣ ♣ ♣ ♣ ♣ ♣ ♣ Increase fluid temperature differentials to reduce pumping rates. After a critical study of the requirement, this can be experimentally done by throttling of valves.

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best practices manual-HVAC


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