THERMAL SCIENCE

International Scientific Journal

Annamaria Buonomano

,

Francesco Calise

,

Maria Vicidomini

A DYNAMIC MODEL OF AN INNOVATIVE HIGH-TEMPERATURE SOLAR HEATING AND COOLING SYSTEM

ABSTRACT
In this paper a new simulation model of a novel solar heating and cooling system based on innovative high temperature flat plate evacuated solar thermal collector is presented. The system configuration includes: flat-plate evacuated solar collectors, a double-stage LiBr-H2O absorption chiller, gas-fired auxiliary heater, a closed loop cooling tower, pumps, heat exchangers, storage tanks, valves, mixers and controllers. The novelty of this study lies in the utilization of flat-plate stationary solar collectors, manufactured by TVP Solar, rather than concentrating ones (typically adopted for driving double-stage absorption chillers). Such devices show ultra-high thermal efficiencies, even at very high (about 200°C) operating temperatures, thanks to the high vacuum insulation. Aim of the paper is to analyse the energy and economic feasibility of such novel technology, by including it in a prototypal solar heating and cooling system. For this purpose, the solar heating and cooling system design and performance were analysed by means of a purposely developed dynamic simulation model, implemented in TRNSYS. A suitable case study is also presented. Here, the simulated plant is conceived for the space heating and cooling and the domestic hot water production of a small building, whose energy needs are fulfilled through a real installation (settled also for experimental purposes) built up close to Naples (South Italy). Simulation results show that the investigated system is able to reach high thermal efficiencies and very good energy performance. Finally, the economic analysis shows results comparable to those achieved through similar renewable energy systems.
KEYWORDS
SHC, double-effect absorption chiller, dynamic energy simulation, evacuated solar thermal collectors
PAPER SUBMITTED: 2015-12-04
PAPER REVISED: 2016-01-29
PAPER ACCEPTED: 2016-04-05
PUBLISHED ONLINE: 2016-05-08
DOI REFERENCE: https://doi.org/10.2298/TSCI151204111B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 4, PAGES [1121 - 1133]
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A dynamic model of an innovative high-temperature solar heating and cooling system

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence