Investigating the performance of a combined solar system with heat pump for houses

Abstract

Citation: AHMAD, M.W. ... et al., 2013. Investigating the performance of a combined solar system with heat pump for houses. Energy and Buildings, 63, Additional Information:• AbstractThe UK government has committed to generate 20% of the country's energy from renewable sources by 2020. This paper investigates energy reduction in houses by using an innovative solar thermal collector combined with a heat pump system. The dynamic lumped parameter model for a small house is derived and the combined heating system is used to provide the typical hot water and heating requirement. The goal is to maintain thermal comfort inside the house and reduce the amount of electricity consumption used for heating and hot water. This is achieved by reducing the electricity costs through optimising the operation of the heat pump, integrating the available solar energy, and by shifting electricity consumption to the cheaper night time tariff. Models of conventional controller on-off and a multi-variable model predictive control (MPC) are developed and used for several different climatic conditions. The results showed that the model predictive controller performed best by providing better comfort, consuming less electric energy and better use of cheap night time electricity by load shifting and storing heat energy in the heating tank.

Development of a dynamic artificial neural network model of an absorption chiller and its experimental validation

“…They tolerate errors, imprecisions and missing data too [9]. ANNs were extensively used during the last decade and have been especially used to solve prediction modelling problems in renewable energy thermal systems [10], [11], [12], [13], [14], [15]. In the following are presented selected studies that focus on modelling absorption chiller systems:…”

The effect of model and objective function mismatch in model predictive control (MPC) for a solar heating system with a heat pump

“…Previous work by the authors of this paper lead to a model predictive control system for a solar heating system combined with an air source heat pump. The model and a comparison of MPC with a conventional controller is presented in [10]. The description of the system is given below, followed by the design of the MPC controller, the solution of the exact optimization problem, and concluding remarks.…”

Integrated system for the use of solar energy in the animal farm

“…As the objective function is adopted with respect to cost, the calculation is carried out and the optimal size for the speci c HP ground heat exchangers is determined. The research work objective of British scientists, Muhammad Waseem Ahmad et al [11], i.e. to reduce the cost of heating and hot water at home, is achieved through the integration of HP, solar energy and electricity at night, which is cheaper than in the daytime, and storage of thermal energy in the heating tank.…”