Thermal energy is necessary of many reasons. The most basic and most obvious includes food preparation and delivery of heat. Thermal energy storage is actually a temporary storage at high temperatures, respectively at low temperatures. It is an advanced technology, which can reduce environmental impact and it can facilitate more efficient and cleaner energy system. Nowadays, these systems have ability to retain thermal energy for a period of three months or more. The aim of design of these systems is to keep the thermal energy in summer period and to use it for heating in winter period. The role of such storage systems is to accumulate the heat, to balance temperature differences and to achieve the most effective use of the collected energy. This paper is focused on thermal analysis of system, which contains concrete tank. It is a system with water as a storage medium and the cooling of the water was monitored for 30 days.
Comparison of basic thermal insulation properties of triple glazing and quadruple glazing. It also compares the heat transfer coefficient of glazing, transmittance of solar radiation, the weight of glass and other basic properties of glazing. It deals with the effect of number and position of low-emission coating the quadruple glazing on the heat transfer coefficient. Reducing weight of quadruple glazing using thin heat-strengthened glass and dimensional constraints.
Energy labelling of windows has been introduced in some Member States - for example Denmark, Finland, Slovakia and the UK. The UK BFRC scheme on window energy labelling has proved very efficient in communicating to the general public about the energy saving properties of high performance products thus contributing to their faster uptake. Slovak labelling system was introduced in 2008. The paper deals with main principles of energy rating system used in Slovenergookno. National system for rating the energy efficiency of windows and is recognised within the Building Regulations as a method to show compliance for your replacement windows installation..
This document deals with the determination of thermal transmission properties of wood-aluminium window with vacuum glazing. Test measurements are performed with guarded hot-box method at defined temperature difference. They describe how the support pillars influence temperature distribution on the surface and how the edge vacuum glazing influence the heat flow through window. The deformation of the temperature field due to support pillars is surprisingly small and its range is from 0.20 K to 0.46 K with temperature difference on both sides of approximately 20 K. Decrease of internal surface temperature from the middle of glass to the edge is about 20.04 – 16.15 = 3.89 K.
Analysis explains and demonstrates how double, triple and possible quadruple glazing affected energy need for heating and cooling of model office building. The analysis covers the heating and cooling season. The question arises whether to aim at increasing the number of glass panes, or at improving the properties of existing glazing.
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