Evaluation and Development of Thermal Analysis Models within the IEA Solar Heating and Cooling Programme, Task VIII Passive and Hybrid Solar Low Energy Buildings

1984 ◽  
pp. 400-404
Author(s):  
O. C. Jørgensen
Keyword(s):  
Thermal Analysis ◽  
Solar Heating ◽  
Low Energy ◽  
Heating And Cooling ◽  
Low Energy Buildings ◽  
Analysis Models

scholarly journals A full 34 factorial experimental design for the low energy building’s external wall

2020 ◽  
Vol 24 (2 Part B) ◽  
pp. 1261-1273
Author(s):  
Tugce Pekdogan ◽  
Sedat Akkurt ◽  
Tahsin Basaran
Keyword(s):  
Experimental Design ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Low Energy ◽  
Statistical Experimental Design ◽  
Effective Parameters ◽  
Heating And Cooling ◽  
Anova Table ◽  
Low Energy Buildings ◽  
Factor Interactions

The low energy building concept is based on improving the building envelope to reduce heating and cooling loads. Improvements in building envelopes depend not only on climatic conditions but also on insulation. In this study, the thermal performance of external walls was studied by using a three-level full factorial statistical experimental design. An opaque wall in low energy buildings was chosen in order to study the effect of selected factors of city (A), orientation (B), insulation location (C), and month of the year (D) on heat loss or gain. A software was used to calculate the ANOVA table. As a result, all three factors of months of the year, city and orientation of the building fa?ade were found to be significant factor effects for heat transfer. Two-factor interactions of AB, AD, BD, and CD were found to be significant. Therefore, the effects of season, location and orientation were successfully shown to be effective parameters.

scholarly journals Solar Heating & Cooling Energy Mixes to Transform Low Energy Buildings in Nearly Zero Energy Buildings

2014 ◽  
Vol 48 ◽  
pp. 924-937 ◽  
Author(s):  
Macedon D. Moldovan ◽  
Ion Visa ◽  
Mircea Neagoe ◽  
Bogdan G. Burduhos
Keyword(s):  
Solar Heating ◽  
Low Energy ◽  
Zero Energy ◽  
Low Energy Buildings ◽  
Zero Energy Buildings

scholarly journals Experimental Measurement of the Accumulated Heat from the Operation System of the Heating in a Building with a Lightweight Envelope

2018 ◽  
Vol 26 (3) ◽  
pp. 65-70 ◽  
Author(s):  
Daniela Koudelková
Keyword(s):  
Large Scale ◽  
Heating System ◽  
Current Control ◽  
Low Energy ◽  
Outdoor Temperature ◽  
Operation System ◽  
Thermal Discomfort ◽  
Complete Replacement ◽  
Heating And Cooling ◽  
Low Energy Buildings

Abstract The heating and cooling of buildings with large-scale ceiling systems nowadays is widely used in traditional as well as in new, low-energy buildings. This type of system is being employed in a building of the Civil Engineering Faculty (FCE), Slovak Technical University, in Bratislava. The building’s refurbishment in 2010 included the complete replacement of the building’s envelope. The replacement is a lightweight facade with a high percentage of transparent construction. Due to the differences between the type of envelope and the heating system, the operation of the heating system frequently causes thermal discomfort, especially during warm spring or autumn days. The aim of the measurements was to evaluate the control of the operation of the heating output, the appropriateness of the location of sensors measuring the outdoor temperature and possible improvement of the current control system to improve the heating system’s quality.

scholarly journals Passivhaus

Encyclopedia ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 20-29
Author(s):  
Alejandro Moreno-Rangel
Keyword(s):  
Building Design ◽  
Design Principles ◽  
Low Energy ◽  
Design Criteria ◽  
Basic Design ◽  
Passive House ◽  
Low Energy Buildings

Passivhaus or Passive House buildings are low-energy buildings in which the design is driven by quality and comfort, hence achieving acceptable levels of comfort through post-heating or post-cooling of fresh air. Additionally, Passivhaus building design follows the Passivhaus design criteria, as described in the Passive House Planning Package (PHPP). This article aims to introduce the Passivhaus background, development, and basic design principles. Finally, it also presents a brief description of the performance of Passivhaus buildings.

Combined Solar Heating and Cooling Systems: Simulation and Design Optimization

2008 ◽  
Author(s):  
Giovanni Nurzia ◽  
Giuseppe Franchini ◽  
Antonio Perdichizzi
Keyword(s):  
Design Optimization ◽  
Heat Pump ◽  
Solar Heating ◽  
Solar Irradiation ◽  
Space Heating ◽  
Thermal Source ◽  
Absorption Chiller ◽  
Cooling Systems ◽  
Detailed Model ◽  
Heating And Cooling

The deployment of solar driven air conditioning is a feasible target in all countries where high solar irradiation matches high cooling loads in buildings: the goal is to gradually replace compression chillers and reduce peak electricity demand during summer. Moreover, as solar thermal collectors are installed, solar cooling systems can be profitably employed during winter. In the present work a code has been implemented for the simulation and the design optimization of combined solar heating and cooling systems. The following system layout has been considered: in warm months the cooling demand is satisfied by means of an absorption chiller — driven by a solar collector field — and a reversible heat pump operating in series. A hot storage matches the variability of solar radiation, while a cold storage smoothes the non-stationarity of cooling demand. During winter, the reversible compression heat pump operates for space heating. Solar collectors are used as thermal source at the evaporator of the heat pump, increasing its coefficient of performance. The code, based on TRNSYS platform, is able to simulate the system throughout a year. Besides TRNSYS standard components a detailed model of the absorption chiller has been included, in order to accurately simulate its off-design operation. Using an optimization tool the size of each component is identified for a given space heating and cooling demand. The minimization of life cycle costs of the system has been chosen as the objective of the optimization. Results of a case study are presented and discussed for a solar heating and cooling plant in an office building. The optimization procedure has been carried out with simulations for a typical Northern Italy town (Alpine climate) and a typical Southern Italy town (Mediterranean climate).

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