Balancing of a Water and Air System (PDF

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96 Air Cooled Chiller The air-cooled chiller consists of one or more of the following: compressors, liquid coolers and air-cooled condensers that include condenser fans. The basic procedure is to measure and/or report the following: • Chiller manufacturer nameplate data • Rated capacity in tons • Model and serial number Evaporator: • the design and actual entering water • the design and actual leaving water temperature • the design and actual pressure drop in feet (kpa) • the design and actual GPM (l/s) 96
97 Condenser • the design and actual temperature Electrical • the design and actual voltage for the compressor( s) • the design and actual amperage for the compressor( s) • the design and actual voltage for the condenser fan( s) • the design and actual amperage for the condenser fan( s) Air Cooled Chiller With Remote Condenser( s) The air-cooled chiller with remote condenser(s) consists of compressors and liquid coolers or evaporators that connect to one or more air-cooled condensers. The basic test for the air-cooled chiller with remote condenser is the same as Air Cooled Chillers with the condenser data being not applicable. Air Cooled Condenser The basic test for the air-cooled condenser is shown on the Associated Air Balance Council’s “Air Cooled Condensing Unit” report form. The basic procedure is to measure and/or report the following: • Condenser manufacturer nameplate data • Rated capacity in tons • Model and serial number • The design and actual entering air temperature • The design and actual voltage for the condenser fan( s) • The design and actual amperage for the condenser fan( s) 97
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Balancing of a water and air system
Page 3 and 4:
3 8 TBA (Testing, Balancing and Adj
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5 Air Balancing Multiple Hood syste
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7 87 Series Loop 88 One pipe main 9
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9 Testing and Balancing HVAC A syst
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11 13. Filter frame properly instal
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13 13. Measure and record all requi
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15 15 Example 3: Find the nearest s
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17 For traverses taken in round duc
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19 Flat Oval Duct Traverses For fie
Page 21 and 22:
21 Balancing Devices Volume Dampers
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23 Turning Vanes Turning vanes (Fig
Page 25 and 26:
25 Balancing the VAV System The gen
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27 maximum out-side air damper for
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29 determines how much energy is in
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31 the water removing capacity of a
Page 33 and 34:
33 Table 8A Dry Bulb on left, Wet B
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35 60 58 56 54 52 50 48 46 44 42 40
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37 Foot³ per 1lb Altitude 0 Feet A
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39 Table 9 C Air Density at 29.29
Page 41 and 42:
41 41 Wet-Bulb (F) .0 .1 .2 .3 .4 .
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43 Table 11A Enthalpy at saturation
Page 45 and 46: 45 Table 11 C Enthalpy at saturatio
Page 47 and 48: 47 Wet bulb temperature____________
Page 49 and 50: 49 and replacement should be shut o
Page 51 and 52: 51 duct may be great; the balancing
Page 53 and 54: 53 Design below the 250°F limit (A
Page 55 and 56: 55 Differential Pressure Gauges The
Page 57 and 58: 57 Venturi The venturi is a device
Page 59 and 60: 59 Pressure Total pressure Velocity
Page 61 and 62: 61 Table 1 shows that if the coil i
Page 63 and 64: 63 adjustment of these devices is n
Page 65 and 66: 65 Grouting Motor and lubrication N
Page 67 and 68: 67 For every outside temperature ot
Page 69 and 70: 69 4. Identify the riser with the h
Page 71 and 72: 71 2. Turn the pump off 3. Close th
Page 73 and 74: 73 Net positive suction head availa
Page 75 and 76: 75 All automatic control valves mus
Page 77 and 78: 77 77
Page 79 and 80: 79 4. Read and record the actual pu
Page 81 and 82: 81 13. Record the coils design and
Page 83 and 84: 83 Air Control Air is always presen
Page 85 and 86: 85 • allow draining of all or par
Page 87 and 88: 87 Valves have linear throttling ch
Page 89 and 90: 89 to all the terminals down the li
Page 91 and 92: 91 Pump Circuits Primary-Secondary
Page 93 and 94: 93 • Evaporator: • the design a
Page 95: 95 95
Page 99 and 100: 99 • Each reading of liquid tempe
Page 101 and 102: 101 • Design and actual entering
Page 103 and 104: 103 differs from the average by mor
Page 105 and 106: 105 • Orifice plate • Turbine m
Page 107 and 108: 107 BTUH = GPM X 60 X 8.337 X ∆T
Page 109 and 110: 109 Lam = lbs. of air per minute th
Page 111 and 112: 111 When dry bulb temperature measu
Page 113 and 114: 113 GPM = FPM X Gallons per foot FP
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