Recently builders have shown considerable interest in combining the features of active and passive solar space heating systems into a hybrid system employing active collection and some form of passive discharge/storage device. Ye examined the performance and economics of a hybrid2 air-based, residential system using 18.5 m of roof-mounted air collectors and a hollow-core slab that discharges di...

Heuristic rule-based control (RBC) is widely used in the building industry for building automation systems (BASs). Recently, researchers demonstrated that model-based control has the potential to improve the building energy efficiency. Model Predictive Control (MPC) is one of the promising approaches that caught much attention of the research community. The system dynamics model play an importa...

This article deals with the possibility of using PCMs in cooling ceiling systems to reduce significantly air temperature fluctuations and energy demands for cooling. The PCM-based ceiling’s technical design was performed, a prototype realized this research. experimental verification proposed system performed determine actual parameters different operational modes their comparison same without P...

In the remote areas of northern China without central heating and gas supply, for users intending to replace coal-boilers, air-source heat pump system is always questionable due contradiction between its capacity user’s demand, especially in very cold areas, whose COP economy poor. The accumulator with phase change materials would be a promising one solve this problem. With help TRNSYS software...

The energy consumption for space cooling is growing faster than any other end-use in buildings, more tripling between 1990 and 2016. Energy efficiency an important topic the drive to reduce of electricity, particularly air conditioning. This paper presents a simulation absorption system with parabolic trough collector under dynamic conditions using TRaNsient SYstem Simulation (TRNSYS) software....

Energy simulations of buildings complement or replace the static calculations used so far and provide detailed answers to questions such as: what is energy demand for individual purposes in a building how does it change over course day, month, year also enable comparison several design variants selection optimal one terms consumption. Therefore, help make decisions optimise architectural instal...

We present a method of analysis for predicting annual performance of an in-situ photovoltaic (PV) array using short-term test data and an annual simulation tool. The method involves fitting data from a family of I-V curves (depicting current versus voltage) taken from a short-term test (1 to 3 day) of a PV array to a set of polynomial functions. These functions are used to predict the array’s b...

This study aims to investigate the fulfillment of four Net Zero Energy Building (NZEB) balances, NZEB-PE, NZEB-site, NZEB-emission and NZEB-cost, considering the four metrics of primary energy (PE), site energy, CO2-eqemissions and energy cost, respectively, using weighting factors based on Finnish and international reference data. The study analyzes five conventional energy systems and seven b...