Waste water heat recovery system
Journal Title: Вісник Національного університету "Львівська політехніка". Серія "Теорія та практика будівництва" - Year 2016, Vol 0, Issue 844
Abstract
After heating and cooling, water heating is typically the second largest user of energy in the home. There are a lot of purposes and uses of hot water in buildings - showers, tubs, sinks, dishwashers and clothes washers etc. In most cases, these hot waste waters are discarded direct to sewer system. When we take into the account all of these purposes in every households, the wastewater retains a considerable portion of its initial energy – energy that could be recovered and used. The cold water that is put into a water heating device can be preheated using the reclaimed thermal energy from a appliance such a shower so that the input water doesn't need as much energy to be heated before being used in a shower, dishwasher, or sink. The water entering a hot water tank is usually close to 12 °C but by recovering the energy in the hot water from a bath or dishwasher, the temperature of the water entering the holding tank can be elevated to 23–25 °C. Installing a waste water heat recovery systems reduces energy consumption and thus greenhouse gas emissions and the overall energy dependency of the household. There are two basic ways how to capture heat from wastewater produced by all sources in a building and to put it to use - require a regenerator-type double-walled heat exchanger or a non-regenerative, straightforward heat exchanger can be used. Heat exchanger systems of each type are available for use in buildings. This paper contains brief overview of the waste water heat recovery system as a way of reducing of overall energy consumption in building as well as sustainable way of capturing and recovering heat within the building.
Authors and Affiliations
G. Markovič, Z. Vranayová, D. Káposztásová
Keywords
Related Articles
- EP ID EP230927
- DOI -
- Views 72
- Downloads 0
Моделювання повітророзподілу в приміщенні у змінному режимі за допомогою моделі турбулентності Спаларта – Алмараса
The article is devoted to the decision of actual task of air distribution efficiency increasing with the help of swirl and spread air jets to provide normative parameters of air in the production apartments. The mathemat...
The air channel function in real life – insulation against rising damp in historical buildings
The purpose of the research is to find adequate solution against rising damp in historical buildings. The improvement in this case is the use of ventilated air channels. A special group of historical buildings are church...
ANALYSIS OF THE VENTILATION AIR FLOW RATE FOR RENEWAL OF WINDOWS
Replacement of old wooden windows in a new plastic windows, in the old buildings, we achieve the massive reducing heat loss of the building. New windows are characterized by better tightness. The question is, how much mo...
ДОСЛІДЖЕННЯ НЕСТАЦІОНАРНИХ НАПІРНИХ ТЕЧІЙ У ТРУБАХ НА ОСНОВІ МАТЕМАТИЧНИХ МОДЕЛЕЙ
The article deals with mathematical modeling of non-stationary processes non-periodic pressure of the fluid in cylindrical tubes. Based on the Navier-Stokes equations for compressible fluid withdrawn simplified equation...
Покращення експлуатаційних властивостей керамічної цегли поверхневим модифікуванням поверхні
In the article there are substantiated and determine the optimal composition of protective covering by the mathematical planning method with taking into account the influence of protective covering on water absorption, a...