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Title: Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A

Abstract

The well-sealed, highly insulated building enclosures constructed by today's home building industry coupled with efficient lighting and appliances are achieving significantly reduced heating and cooling loads. These low-load homes can present a challenge when selecting appropriate space-conditioning equipment. Conventional, fixed-capacity heating and cooling equipment is often oversized for small homes, causing increased first costs and operating costs. Even if fixed-capacity equipment can be properly specified for peak loads, it remains oversized for use during much of the year. During these part-load cooling hours, oversized equipment meets the target dry-bulb temperatures very quickly, often without sufficient opportunity for moisture control. The problem becomes more acute for high-performance houses in humid climates when meeting ASHRAE Standard 62.2 recommendations for wholehouse mechanical ventilation.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Univ. of Central Florida, Orlando, FL (United States). Florida Solar Energy Center
Publication Date:
Research Org.:
Univ. of Central Florida, Orlando, FL (United States). Florida Solar Energy Center
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B)
Contributing Org.:
National Renewable Energy Laboratory (NREL)
OSTI Identifier:
1421385
Report Number(s):
DOE/EE-1702
DOE Contract Number:  
EE0007056
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; Building America; FSEC; ventilation; moisture control

Citation Formats

Martin, Eric, Withers, Chuck, McIlvaine, Janet, Chasar, Dave, and Beal, David. Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A. United States: N. p., 2018. Web. doi:10.2172/1421385.
Martin, Eric, Withers, Chuck, McIlvaine, Janet, Chasar, Dave, & Beal, David. Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A. United States. doi:10.2172/1421385.
Martin, Eric, Withers, Chuck, McIlvaine, Janet, Chasar, Dave, and Beal, David. Wed . "Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A". United States. doi:10.2172/1421385. https://www.osti.gov/servlets/purl/1421385.
@article{osti_1421385,
title = {Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A},
author = {Martin, Eric and Withers, Chuck and McIlvaine, Janet and Chasar, Dave and Beal, David},
abstractNote = {The well-sealed, highly insulated building enclosures constructed by today's home building industry coupled with efficient lighting and appliances are achieving significantly reduced heating and cooling loads. These low-load homes can present a challenge when selecting appropriate space-conditioning equipment. Conventional, fixed-capacity heating and cooling equipment is often oversized for small homes, causing increased first costs and operating costs. Even if fixed-capacity equipment can be properly specified for peak loads, it remains oversized for use during much of the year. During these part-load cooling hours, oversized equipment meets the target dry-bulb temperatures very quickly, often without sufficient opportunity for moisture control. The problem becomes more acute for high-performance houses in humid climates when meeting ASHRAE Standard 62.2 recommendations for wholehouse mechanical ventilation.},
doi = {10.2172/1421385},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {2}
}