An alternative to condensing heat recovery coil in an air-handling unit is the inclusion of a water-cooled condenser
upstream of and in series with the holdback valve and the final air-cooled condenser, as shown in Figure 4.
Also available are water heating/cooling systems with closed-circuit water cooling, air- or water-cooled condenser
, temperature range of 50 to 194[degrees]F, and pump capacity of 60 to 400 liter/min.
For this study, the refrigeration system includes a variable-speed drive compressor, a water-cooled condenser
, a metering valve and a capillary tube as the expansion device, and a cold plate as the evaporator.
In comparison, a water-cooled condenser
should be cleaned once per year.
dollars) Compact Fluorescent Lamps (~40) $510 Refrigerator (with no freezing compartment) ($190) (1) Small Chest Freezer (secondhand) $130 Water-saving Euro clothes washer $320 (2) Dual Temperature clock-thermostat $ 65 Water-cooled condenser
for central A/C $320 (2) Total $1,155 Annual Electricity saving (25 year payback) $450 (1)Cheaper than model with freezer.
A better design would use a remote air-cooled condenser located outdoors, or some ductwork to route an indoor condenser's airside discharge to the outdoors, or perhaps a water-cooled condenser
connected to the building's main condenser water service.
Once-through cooling draws water from a reservoir, river, ocean, or other body of water located near the power plant through a heat exchanger (usually a water-cooled condenser
) and returns the water to that body of water, at a higher temperature.
* Use a cooling tower to evaporatively cool cooling water, which in turn cools a water-cooled condenser
Ranging from 3 to 15 tons, units are available in both air- and water-cooled condenser