Figure 22-1 Evaporator sensible and latent capacity vs. entering air wet bulb
Figure 22-2 Enthalpy change through the evaporator
Figure 22-3 Two aluminum domestic refrigeration evaporators
Figure 22-4 Commercial refrigeration evaporator for walk in cooler ( 2008 Heatcraft Refrigeration Products LLC.)
Figure 22-5 Large tonage chiller
Figure 22-6 Bare pipe evaporator coil with gravity air circulation
Figure 22-7 Plate-type evaporator (Courtesy Sporlan Valve Company)
Figure 22-8 Tube and fin evaporator (Courtesy Hampler Engineering Corporation)
Figure 22-9 Four styles of air conditioning coils, from top left clockwise, slab, slant, A, and M
Figure 22-10 Three directions of airflow through an evaporator coil
Figure 22-11 Cross section of a tube in tube evaporator, the water travels through the inside copper tube and the refrigerant travels through the steel tube in the opposite direction
Figure 22-12 The water in the tank is cooled by the refrigerant in the tubing which is wrapped around the tank
Figure 22-13 Direct expansion chiller; refrigerant tubes, water in the shell
Figure 22-14 Refrigerant enters this DX evaporator at the bottom as a saturated liquid/vapor mixture and leaves at the top as a superheated vapor
Figure 22-15 The evaporator tubing in this freezer also servers as the shelves (Courtesy of General Electric.)
Figure 22-16 Roll-bond refrigerator evaporator (Courtesy of Bundy Refrigeration, www.bundyrefrigeration.com.)
Figure 22-17 Plate evaporator with tubes brazed to a galvanized plate
Figure 22-18 Tube and fin coil construction
Figure 22-19 Tubes are expanded into the fins to form a tight mechanical bond
Figure 22-20 Effect of a corrosive environment on a copper tube, aluminum finned coil (Courtesy of Brog-Dlow Technologies)
Figure 22-21 Ice bridging between fins on a tube and fin coil
Figure 22-22 Comparison of fin spacing on coils for three different applications; the low temperature is on the left, medium temperature is in the middle, and air conditioning on the right
Figure 22-23 The grooves, or rifling, on the inside of this tubing increase heat transfer by creating turbulent flow from http://www.processcooling.com/cda/archives/e973 bde5c95b7010vgnvcm100000f932a8c0, by Michael Scholnick, Darratt- Callahan Co. (Courtesy of Garratt-Callahan Company)
Figure 22-24 Multi-row coil used in commercial refrigeration application
Figure 22-25 Slant evaporator used in a heat pump blower coil
Figure 22-26 Air conditioning A coil
Figure 22-27 Air conditioning M coil
Figure 22-28 R-410a cooling capacities (Courtesy of Carrier 2008 Carrier Corporation.)
Figure 22-29 Direct expansion evaporator coil showing counterflow airflow
Figure 22-30 The incline manometer is measuring 0.15 in WC static pressure drop across the evaporator coil
Figure 22-31 Static pressure drop can be read using either a magnehelic gauge, shown on top, or an incline manometer, shown below; both are reading 0.17 in WC here
Figure 22-32 R-410a and R-22 coil static pressure drop (in WC) (Courtesy of Carrier 2008 Carrier Corporation.)
Figure 22-33 The sides of this drain pan slant in and toward the drain outlet to reduce the amount of standing water in the drain pan
Figure 22-34 Correct condensate drain line piping includes a properly sized trap and clean outs
Figure 22-35 Condensate disposal for a refrigerator
Figure 22-36 Condensate disposal for window air conditioner
Figure 22-37 Evaporator condensate pump
Figure 22-38 Direct expansion coil, row, and face control
Figure 22-39 Typical coil operating parameters for commercial refrigeration applications
Figure 22-40 (a) Air defrost evaporator unit (Courtesy Toco Bueno); (b) The air moved over the coil during the off cycle melts the ice
Figure 22-41 Electric defrost evaporator unit: (a) End cover removed; (b) Bottom cover removed; (c) Electric resistance pan heater to prevent ice from forming during the defrost cycle (Courtesy Hampden Engineering Corporation)
Figure 22-42 Typical commercial refrigeration defrost timer
Figure 22-43 Typical piping of hot gas defrost system using solenoid operated evaporator pressure regulating valves (Courtesy of Sporlan Division-Parker Hannifin Corporation.)
Figure 22-44 Drain line heaters; (a) Wrong application; (b) Correct application (Courtesy of Kramer Refrigeration)
Figure 22-45 Coaxial tube heat exchanger
Figure 22-46 The highlighted area shows the evaporator in this water cooler (Courtesy of Elkay Manufacturing Company.)
Figure 22-47 Roof mounted, air cooled packaged water chiller
Figure 22-48 Water is in the shell of this DX chiller; liquid refrigerant flows through the tubes, which are submerged in the water; the refrigerant is superheated before leaving the chiller to prevent any liquid from returning to the compressor
Figure 22-49 Liquid refrigerant is in the shell of this flooded chiller; the water flows through the tubes that are submerged in the liquid refrigerant; the eliminators prevent any liquid from returning to the compressor
Figure 22-50 Packaged brine cooler
Figure 22-51 This certificate shows that these two pieces of equipment will work properly together to give the results listed