LoginThe present paper describes heat pump systems and their energy efficiency. In the first part of the paper the modelling of heat pump system is presented.
Bibliographic database Airbase
AIRBASE is the Bibliographic Database of the AIVC. It contains publications and abstracts of articles related to energy efficient ventilation. Where possible, sufficient detail is supplied in the bibliographic details for users to trace and order the material via their own libraries. Topics include: ventilation strategies, design and retrofit methods, calculation techniques, standards and regulations, measurement methods, indoor air quality and energy implications etc. Entries are based on articles and reports published in journals, internal publications and research reports, produced both by university departments and by building research institutions throughout the world. AIRBASE has grown and evolved over many years (1979 to present day, over 22000 references and 16000 documents available online). For most of the references, the full document is also available online.
The AIVC website includes a protected content feature that provides access to AIRBASE. Access to the protected content is free of charge but requires you to register first.
This study developed a component-based gray-box model for variable refrigerant flow (VRF) airconditioning systems to simulate and predict the performance and energy consumption of VRF system in cooling condition.
Simulation of passive down-draught evaporative cooling (PDEC) systems in EnergyPlus | 2009 | English
This paper discusses the development of a new module in EnergyPlus that predicts the cooling performance of PDEC towers with sprays. It introduces an overview of PDEC towers and existing models.
In this work, we present a new managament strategy for a ground coupled HVAC system in a cooling dominated office area. The idea is disminish the electrical consumption while keeping the thermal comfort requirements.
A mathematical model is presented to predict the behaviour of condensation and frost formation on heat transfer surfaces by simultaneously considering the condensing and frost layer.
Most of commercial buildings are intermittently operated in practice.
In Denmark, cooling of office buildings during summer contributes significantly to electrical consumption.
The renovation of a building in terms of thermal insulation will improve the level of energy consumption in winter.
This paper reviews the current situation in M&E (services) engineering in the United Kingdom considering the use of simulation in the building design and engineering process.
For the use in Swiss standards on energy performance of cooled buildings, a chiller model for an hourly time step calculation was needed.
The performance of hot water space heating systems for mild to warm temperate climates is dominated by the efficiency of boiler operation at low load (i.e. below 25% of nameplate capacity).
A simplified model was developed by use of thermal-ventilation network with the purpose of studying air environment in void space at the central portion of high-rise apartment houses when gas-fired boilers were installed in the void.
In this article, we will present a new multi-level modelling approach to obtain higher precision in HVAC plant simulation models.
As a cost-effective alternative to experiments, computational fluid dynamics (CFD) can provide new insight in airflow patterns and the related convective heat transfer (CHT).
The paper describes results from a reference study that focuses on the application of the Computational Fluid Dynamics (CFD-) technique for heat and smoke transport in practice.
Computational Fluid Dynamics (CFD) has been introduced to the architectural engineering and HVAC (Heating Ventilation and Air Conditioning) industry for decades.
Indoor climate has a three-dimensional spatial distribution caused by three-dimensional airflow. To obtain the accurate knowledge of building performance, it is demanded to integrate the spatial distribution into building simulations.
A jet of cold air is denser then ambient air but it adheres to the ceiling of the room over the given distance when it is blown horizontally close to it.
The Proceedings of the International workshop: "Summer Comfort and Cooling", held in Barcelona, Spain, 31 March -1 April, 2009.