The energy conservation potential of the heat pipe based heat exchangers (HPHXs) was studied in this research. To this end, a typical climate chamber as the representative of an air conditioning system was established. The performance characteristic of a typical eight-row HPHX was obtained based on the one week operation (168 h) to determine the performance characteristic curves. The coil face ...

Thermal energy for domestic hot water and heating use is stored in water tanks. Depending on the time of charging and the consumption the size of the storage tank has to be adjusted. In solar thermal systems, tanks sizes are typically around 0.3 – 0.5 cubic meter for single family houses and in case of seasonal storage systems up to several hundreds of cubic meters in district heating systems. ...

Wind power can make an important contribution to the goal of reducing emissions of CO2. The major problem relates to the intrinsic variability of the source and the difficulty of reconciling the supply of electricity with demand particularly at high levels of wind penetration. This challenge is explored for the case of the ERCOT system in Texas. Demand for electricity in Texas is projected to i...

background: car wash waste water contains several contaminants such as organic matter, oil, grease, detergents and phosphates, all of which are harmful for the environment. in this study, the application of electrocoagulation (ec) to treat car wash waste water has been studied, and the operating parameters optimized. the electro-fenton (ef) for further contaminant removal was also investigated....

Many non-electrified rural communities find it challenging to follow a precise scientific protocol assess the feasibility of installing wind turbine on their site. The objective present work is define clear for assessment potential case Logone Birni (LB) taken as study. For this purpose, protocol, integrating parameters site have been used calculate power density, annual energy yield, and capac...

Buildings are among the largest consumers of energy. Part of the energy is wasted due to the habits of users and equipment conditions. A solution to this problem is efficient energy usage. To this end, an energy audit can be conducted to assess the energy efficiency. This study aims to analyze the energy usage of a primary school and identify the potential energy reductions and cost savings. A ...

Wind energy has been considered one of the most popular forms renewable energy. It widely for generation electricity its low maintenance cost and negligible effect on environmental pollution. The purpose this research is to evaluate compare wind potential in seven different districts Bangladesh including Barisal, Chittagong, Dhaka, Khulna, Rajshahi, Rangpur, Sylhet. Data had recorded daily basi...

The renewable energy resources such as wind power have recently attracted more researchers’ attention. It is mainly due to the aggressive energy consumption, high pollution and cost of fossil fuels. In this era, the future fluctuations of these time series should be predicted to increase the reliability of the power network. In this paper, the dynamic characteristics and short-term predictabili...

Environmental performances of electricity generation, expressed as environmental impacts per kWh of electricity produced, depend strongly on technical, methodological and geographical parameters. When considering the global environmental performances of renewable energies, a geo-dependent life cycle assessment (LCA) taking into account geographical issues is of high interest. To illustrate this...

In this study, techno-economic and environmental feasibility analyzes of meeting the electrical energy required for irrigation need agricultural land 10,000 m2, which is considered to be independent grid, in rural area Polatlı district Ankara, with a solar-wind hybrid renewable system, were carried out using HOMER-Pro software. The load was determined as 64 kWh/day. addition, it assumed that ho...