Page 380 - Defrosting for Air Source Heat Pump

Index 377

W additional initial cost effect on total cost,
Water-collecting tray, in ASHP unit, 48, 94, 335f, 338–339
96–97, 304, 343 cooling season, 331–335
airside surface conditions, 326t, 327 defrosting stage, 331, 332–333f
frosting/defrosting cycle, 331, 333f
cooling assumptions, 330
defrosting assumptions, 329 heating seasons with frost formation, 337
defrosting experimental cases, 325–327, heating seasons without frost formation,
326t 337
durations in frosting/defrosting cycle, indoor air thermal energy, 337–338
325–327, 327f proportion of additional first cost, 331,
economic analysis, methodology 336f
of, 325f proportion of first cost in total cost, 331,
frosting assumptions, 328 335f
frosting operation performance, 325 running cost difference, 338–339
fundamental assumptions, 328 total cost differences, 331, 335f
prototype condition, 325–327, 326f Water-source heat pumps (WSHPs), 1–2
running costs Wet-bulb temperature sensors, 119