Download Fine Tuning Air Conditioning & Refrigeration Systems by Billy C. Langley PDF

By Billy C. Langley

This entire, hands-on guide covers all the strategies essential to fine-tune HVAC/R platforms for maximum working potency. Easy-to-follow directions and worksheets advisor readers via each one step of the method, giving them the instruments they should guarantee that gear can function at height potency as designed by way of the producer. the total spectrum of structures and kit are coated, together with electrical heating, gasoline heating, oil burners, air-con structures, warmth pumps, and refrigeration apparatus. A wealth of worthy diagrams, illustrations, estimating instruments, and worksheets also are supplied. a number of tear-out copies of every worksheet are supplied to be used at the activity.

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Extra info for Fine Tuning Air Conditioning & Refrigeration Systems

Example text

380 kW , what is the COP? 413 When the heat pump unit is operating at its peak efficiency but is not heating the structure properly, there are some other options available. First, open all of the supply air grilles, measure the cfm from each one, and total them. If the cfm is 10% less than that determined in Step 8, air is leaking from the duct system. Find the leak and repair it. The next step is to measure the duct heat loss. To do this, measure the supply air temperature as it leaves the supply air grille located farthest from the indoor unit.

In mathematical terms, efficiency may be explained as the following: Efficiency = Useful energy out Total energy The components must be clean and in good working condition, and clean air filters must be installed. ADJUSTMENT PROCESS There are several closely related factors involved in the adjustment process. When an adjustment is made to one of these factors, the other factors are also affected. REQUIRED TEST INSTRUMENTS The proper test instruments are needed to make accurate measurements of the product or process being tested.

First, open all the supply air grilles, measure the cfm from each one, and total them. If the cfm is 10% less than that determined in Step 10, air is leaking from the duct system. Find the leak and repair it. The next step is to measure the duct heat gain. To do this, measure the supply air temperature as it leaves the supply air grille located farthest from the cooling unit. The difference in the supply air temperature at the supply air grille and the temperature of the supply air from the cooling unit should not exceed 3 ° to 5°F.

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