In this paper, an economic study of solar heat pumps and an investigation of differences between solar heat pumps and conventional heat pumps—based on their performances and energy consumption—are conducted for a residential apartment located in Austin, Texas, USA. Heating in the apartment is provided via a solar heat pump during the cold months of a year. Solar collectors are used to meet the ...

Air pre-cooling equipment is normally being employed in air-conditioning systems for pre-cooling the ambient outdoor air to enhance the air-conditioning systems performance. In this study, the potential of a passive water-to-air heat pipe based heat exchanger (HPHEX) for air pre-cooling purpose in air-conditioning systems for the high cooling load demanding regions of Iran was investigated. To ...

The instability of solar energy and its resource distribution characteristics make it difficult to judge suitability in practical engineering applications, which hinders promotion application. In order better promote the effective use heating system, is necessary put forward a simple method judging system for This study puts “F, Q” as basis systems built on roof. Two types public buildings, off...

Abstract Solar collectors are devices that enable the use of solar radiation, e.g., for hot water preparation or space heating. They playing an increasingly important role in Europe and around world, mainly due to easy availability sun, as energy source. The advisability their depends on a number factors, which climatic conditions extremely one. This paper presents results simulations collector...

Renewable energy exploitation in the building sector can lead to significant savings and carbon dioxide emission avoidance. The objective of this study is detailed investigation a biomass-driven absorption heat pump for heating cooling. practically single-effect chiller operating with Lithium-bromide/water solution it has been properly modified production during winter. This system novel one it...

The user’s action is a decisive factor in the energy performance of a building. In this paper is demonstrated the necessity of using more specific user’s profiles (UPs) in simulations of building’s energy performance (EP). The Spanish Technical Code for Buildings (CTE) offers a unique generic residential UP for all sites in the country. With the purpose of achieving more realistic UP, energy da...

One of the most important factors when low energy houses are built is to have good heat recovery on the ventilation system. However, standard ventilation units use a considerable amount of electricity. This article discusses the consequences on a system level of using hybrid ventilation with heat recovery. The simulation program TRNSYS was used in order to investigate a ventilation system with ...

The potential of natural materials is becoming more and important as concerns about the environmental impact energy efficiency construction sector grow. Incorporating waste from fiber sub-products seems like a wise choice, in line with circular economy model. Despite fact that date palm have been extensively researched developed for use modern buildings, using fibers has not widely explored. Th...