Timetool login4/2/2023 It was also shown that operation at full electrical output gives a better performance than a heat load-following strategy due to the reduction of the electrical generation efficiency of the MGT unit at part load conditions. The payback period of natural gas driven trigeneration systems and greenhouse gas emissions savings will depend on the relative gas and electricity prices and the COP of the vapour compression and absorption systems. The results showed that energy and environmental benefits can be obtained from the application of trigeneration systems to supermarkets compared to conventional systems. Historical energy demand data were used for the analysis, which considered factors such as the fraction of the heat output used to drive the absorption chillers, the chiller COP and the difference between electricity and gas prices. A spreadsheet energy model has been developed for the analysis of trigeneration systems and a 2,800 m2 sales area supermarket was selected for the feasibility study. Marriott2 School of Engineering and Design, Brunel University, Uxbridge, Middlesex, UB8 3PH, UK 1Department of Engineering Systems, London South Bank University, 103 Borough Road, SE1 0AA, UK 2 Doug Marriott Associates, Kent, UK Abstract This paper presents results on the evaluation of energy utilisation efficiency and economic and environmental performance of a micro-gas turbine (MGT) based trigeneration system for supermarket applications. The review indicates the additional benefits of energy supply systems for mine sites that concurrently meet all utilities.ฤก Trigeneration in food retail: an energetic, economic and environmental evaluation for a supermarket application N. This paper reviews some aspects of precedent energy management practice in mineral operations, which highlights energy challenges characteristic of the sector and sets out the initial formulation of optimal mine site energy supply. The variety of mining circumstances, temporal variations in energy prices, institutional inertia, and conservatism in design for mines are some of the reasons for this. The methodology that optimizes configuration of polygeneration systems for mine sites has not been reported before. Heat has not yet been considered for the mining sector in an integrated manner, which makes polygeneration of great interest. The primary motivation for this research is to help ensure that Canadian mineral producers will achieve reduced production costs through improvements in the efficiency with which they consume energy resources. Abstract: This paper reports on early work and concept development for Optimal Mine Site Energy Supply, where the specific energy supply requirements and constraints for mineral production operations are considered against methodologies that have been applied for other sectors and in other energy policy regimes.
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