Development and Performance of Roof-Based Building-Integrated Photovoltaic-Thermal Systems: A Review

2021 ◽  
Vol 143 (4) ◽  
Author(s):  
Xu Cheng ◽  
Zhijun Zou ◽  
Guoqing Yu ◽  
Guobin Ma ◽  
Hai Ye ◽  
...  
Keyword(s):  
Indoor Environment ◽  
Building Envelope ◽  
Total Efficiency ◽  
Thermal Systems ◽  
Advantages And Disadvantages ◽  
Heating And Cooling ◽  
Air Heating ◽  
Building Integrated Photovoltaic ◽  
And Performance ◽  
Heating And Cooling Load

Abstract A building-integrated photovoltaic-thermal (BIPVT) system integrates building envelope and photovoltaic-thermal collectors to produce electricity and heat. In this paper, the electrical and thermal performance of roof-based BIPVT systems developed in the recent two decades and their effects on heating and cooling load of the building are reviewed. According to the use of thermal energy from the photovoltaic (PV) panels, the roof-based BIPVT are classified into three classes: cooling of PV, air heating, and water heating. Each class is further divided into several types according to the designs of the integrated PV roofs. Compared with BIPV systems, the total efficiency of most BIPVT systems is significantly improved. However, the decrease in electricity output and adverse impact on the indoor environment is also found for some designs of BIPVT systems in some climates. The advantages and disadvantages of various designs are discussed. Issues to be further studied in the future are also provided in this review.

The Effects of Window Film on the Performance of Window System

2014 ◽  
Vol 525 ◽  
pp. 408-411
Author(s):  
Min Seon Jang ◽  
Gyeong Seok Choi ◽  
Jae Sik Kang ◽  
Yumin Kim
Keyword(s):  
Energy Consumption ◽  
Cooling Load ◽  
Indoor Temperature ◽  
Heating And Cooling ◽  
Window System ◽  
Window Systems ◽  
Clear Glass ◽  
Window Film ◽  
And Performance ◽  
Heating And Cooling Load

Window film is generally attached the glazing in buildings to improve the thermal performance of the window system by addressing a range of problems such as indoor temperature rise, indoor temperature imbalance, degraded heating and cooling load due to excessive influx of solar radiation. To evaluate the performance of window films, window films are attached to 3mm or 6mm clear glass. However, window films are generally used on existing window systems for reducing the annual energy consumption. Therefore it is necessary to evaluate the performance of window films depending on the performance of glazing such as clear double glazing or low-e double glazing. Thus the purpose of this study is to analyze the performance of window systems when window film is attached. As a result, in the case of applying window films for reducing the SHGC of buildings, it is necessary to select window films suitable for the configuration and performance of the glazing to be installed, considering the SHGC of the entire glazing system.

Automated processes of estimating the heating and cooling load for building envelope design optimization

2017 ◽  
Vol 11 (2) ◽  
pp. 219-233 ◽  
Author(s):  
Seongmi Kang ◽  
Seok-gil Yong ◽  
Jinho Kim ◽  
Heungshin Jeon ◽  
Hunhee Cho ◽  
...  
Keyword(s):  
Design Optimization ◽  
Building Envelope ◽  
Cooling Load ◽  
Heating And Cooling ◽  
Automated Processes ◽  
Heating And Cooling Load

scholarly journals Energy Audit and Analysis of an Institutional Building under Subtropical Climate

2018 ◽  
Vol 8 (2) ◽  
pp. 845 ◽  
Author(s):  
Yazed Yasin Ghadi ◽  
Ali M. Baniyounes
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Environmental Parameters ◽  
Subtropical Climate ◽  
University Campus ◽  
Energy Usage ◽  
Climate Conditions ◽  
Heating And Cooling ◽  
And Performance ◽  
Heating And Cooling Load

<p>Evaluation and estimation of energy consumption are essential in order to classify the amount of energy used and the way it is utilized in building. Hence, the possibility of any energy savings potential and energy savings opportunities can be identified. The intention of this article is to study and evaluate energy usage pattern of the Central Queensland University campus’ buildings, Queensland, Australia. This article presents the field survey results from the audit of an office building and performance-related measurements of the indoor environmental parameters, for instance, indoor air temperature, humidity and energy consumption concerned to the indoor heating and cooling load. Monthly observed energy usage information was employed to investigate influence of the climate conditions on energy usage.</p>

A Case Study on the Verification of Passive Office Energy Performance Comparing Actual Energy Consumption to Simulation Result

2013 ◽  
Vol 361-363 ◽  
pp. 427-430 ◽  
Author(s):  
Young Sun Ko ◽  
Sang Tae No
Keyword(s):  
Energy Consumption ◽  
Energy Performance ◽  
Building Envelope ◽  
Office Building ◽  
Simulation Accuracy ◽  
Existing Building ◽  
Heating And Cooling ◽  
Insulation Thickness ◽  
Actual Energy Consumption ◽  
Heating And Cooling Load

The objective of this study is to verify energy performance of passive office building compared to existing building using computer simulation tool, EnergyPlus. S building was selected as a passive office building, which is the first passive office building in KOREA, and the building satisfy the passive house standard. The annual energy consumption data were compared to the heating and cooling load result of EnergyPlus, to verify simulation accuracy. The conditions of existing building were selected from Korean envelope standard and the categories of the conditions are the insulation thickness and glazing composition. As a result, the passive office showed 28% reduced energy consumption, compared to the existing building, with ordinary envelope under Korean building envelope standard.

Analysis of Building Envelope Performance Effects of an Insulating Semi-Transparent Photovoltaic (STPV) Glazing Unit

2014 ◽  
Author(s):  
Dirk V. P. McLaughlin ◽  
Konstantinos Kapsis ◽  
Andreas K. Athienitis ◽  
Sam Siassi ◽  
Livio Nichilo
Keyword(s):  
Performance Standards ◽  
Energy Performance ◽  
Building Envelope ◽  
Commercial Building ◽  
Heating And Cooling ◽  
Performance Effects ◽  
Gas Consumption ◽  
U Value ◽  
And Performance ◽  
Cooling Loads

This paper presents characterization results for the electrical and thermal properties of a unique insulating semi-transparent photovoltaic (STPV) glazing unit using calorimetry hot box methods finding a U-value of 1.09 W/m2·°C and a SHGC of 0.11. These properties are then applied to an energy model of a case study commercial building in a continental climate region to examine the effects of utilizing STPV in the building envelope on the electricity and natural gas consumption levels and peak demands. The results indicate that such a building envelope can significantly reduce heating and cooling loads compared to standard glazing which would help architects maintain the desirable properties of highly glazed façades while avoiding the drop in building energy performance that could make adhering to increasingly stringent building codes and performance standards difficult. The paper also presents simulation results for the photovoltaic energy generation of the vertical STPV façades at two building orientations.

MODERN EQUIPMENT FOR DETERMINING TRACTOR-SPEED PROPERTIES OF THE VEHICLE: CHARACTERISTICS’ ANALYSIS IN LABORATORY CONDITIONS

2019 ◽  
Vol 16 (3) ◽  
pp. 276-289
Author(s):  
N. V. Savenkov ◽  
V. V. Ponyakin ◽  
S. A. Chekulaev ◽  
V. V. Butenko
Keyword(s):  
Environmental Performance ◽  
Operating Conditions ◽  
Special Role ◽  
Development Stages ◽  
Advantages And Disadvantages ◽  
Force Transfer ◽  
Characteristics Analysis ◽  
And Performance ◽  
Loading Devices ◽  
Structural Solutions

Introduction. At present, stands with running drums are widely used for various types of tests. Power stands play a special role. Such stands take the mechanical power from the driving wheels of the car. This simulates the process of movement of the vehicle under operating conditions. Such equipment has various designs, principles of operation and performance. It is also used in tests that are different by purpose, development stages and types: research, control, certification, etc. Therefore, it is necessary in order to determine the traction-speed, fuel-efficient and environmental performance characteristics.Materials and methods. The paper provides the overview of the power stands with running drums, which are widespread on the domestic market. The authors carried out the analysis of the main structural solutions: schemes of force transfer between the wheel and the drum; types of loading devices; transmission layout schemes and features of the control and measuring complex. The authors also considered corresponding advantages and disadvantages, recommended spheres of application, demonstrated parameters and characteristics of the units’ workflow, presented components and equipment.Discussion and conclusions. The authors critically evaluate existing models of stands with running drums. Such information is useful for choosing serial models of stands and for developing technical tasks for designing or upgrading the equipment.

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