Discussion on “Gas firing boilers”

Cosmic - Ray Anomalies Inspired Some Discussion on Modified Chaplygin Gas

The postulation of dark energy and dark matter on the basis of observational results does not end the mystery of their existence. Theoretically new insights into dark matter have been achieved analysing recent experimental data from the cosmic -ray physics. It has been shown that, if the dark matter is a hidden scalar field, then it is not only possible to explain the ATIC / PPB-BETS excess but...

Measurements and Modeling of Flue Height Influence on Air Pollution Emissions and Thermal Efficiency of Natural Draught Gas Fired Boilers

This paper presents and analyses results from experimental and CFD work undertaken on a 24 kW domestic natural-draught gas fired boiler. The effect of chimney height on boiler flue gases is being considered to address the need for increasing concern over environmental safety as well as saving of energy. A multi-component analysis computer (DELTA 2000 CD) is used to analyze the flue gases. 3D nu...

A brief discussion on energy use and greenhouse gas emmision in organic farming

Organic farming has become increasingly popular in the world. This is mostly attributed toescalating consumer concerns over the impacts of pesticides and chemical fertilizers on humanhealth as well as growing concerns over environmental pollution derived from modernagricultural practices, such as rising greenhouse gas emissions and water contaminations. Butdoes organic farming actually displace...

Optimal operation strategy of the hybrid heating system composed of centrifugal heat pumps and gas boilers

Centrifugal heat pump has to be coupled with gas boiler to supply high temperature water in radiator heating system. Regarding to hybrid heating system (HHS), operation strategy has significant impact on its annual energy consumption and cost. In this paper, the optimal operation strategy of the HHS composed of sewage-source centrifugal heat pumps and gas boilers was analyzed. Firstly, the perf...

Modelling of NOx Emissions in Natural Gas Fired Hot Water Boilers