Solar Assisted Ground Source Heat Pump Performance in Nearly Zero Energy Building in Baltic Countries

Abstract

Abstract-In near zero energy buildings (NZEB) built in Baltic countries, heat production systems meet the challenge of large share domestic hot water demand and high required heating capacity. Due to passive solar design, cooling demand in residential buildings also needs an assessment and solution. Heat pump systems are a widespread solution to reduce energy use. A combination of heat pump and solar thermal collectors helps to meet standard requirements and increases the share of renewable energy use in total energy balance of country.The presented paper describes a simulation study of solar assisted heat pump systems carried out in TRNSYS. The purpose of this simulation was to investigate how the performance of a solar assisted heat pump combination varies in near zero energy building. Results of three systems were compared to autonomous (independent) systems simulated performance. Different solar assisted heat pump design solutions with serial and parallel solar thermal collector connections to the heat pump loop were modelled and a passive cooling possibility was assessed. Simulations were performed for three Baltic countries: Lithuania, Latvia and Estonia.

Performance analysis of a solar-assisted ground source heat pump system in climatic conditions of Turkey

“…10, the average soil temperature near the boreholes dropped from 15.8-13.5 °C at the end of ten years. The temperature decrease in the ten-year period can be considered as small, and these results are also consistent with the literature [17,29].…”

“…They also proposed a methodology for the determination of different system energy efficiencies. Januševičius and Streckienė [17] carried out a simulation study of a SAGSHP using TRNSYS to examine the performance of this system for a near-zero energy building. Li et al [18] investigated the effect of different operation strategies of a combined system on the system performance and soil temperature variation.…”

The Tianjin Eco-City model in the academic literature on urban sustainability

“…Whereas the management of non-hazardous waste is the responsibility of local governments (Bacinschi et al, 2010), that of hazardous waste from the healthcare, construction and industrial sectors may remain the responsibility of the producers, which could be a matter of concern with regard to more comprehensive urban waste management. B.10 Indic 19 Renewable energy ratio Renewable energy (RE) ratio is widely used for the assessment of energy performance, especially in the green building and electric vehicle sectors (Begum et al, 2013;Beheiry, 2011;Chen et al, 2014;Gerylo, 2010;Januševičius and Streckienė, 2013;Monteiro and Nunes, 2015;Prata et al, 2013). Other indicators for measuring the development and outcome of RE include "investment in renewable energy" (Spalding-Fecher, 2003), and "household savings" with smart energy control systems (Mourad et al, 2014).…”

Solar Hot Water Heating System Analysis Using Different Software in Single Family House

“…TRNSYS is a transient systems simulation program that has been commercially available since 1975 [12]. This software has been used extensively to simulate solar energy applications, conventional buildings, and even biological processes [8,10,[13][14]. The software has a modular structure with a main visual interface.…”