Potential of predictive control for improvement of seasonal coefficient of performance of air source heat pump in Central European climate zone

Pospíšil, Jiří; Špiláček, Michal; Kudela, Libor

doi:10.1016/j.energy.2018.04.131

Cited by 35 publications

(16 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the solar energy is available, thermal energy, (1) in Figure 1, is used to drive the adsorber (3) of the adsorption chiller. The chiller comprises two adsorbers working in counter-phase, to continuously provide cooling on the evaporator (5) side, which cools down the condenser of the bottoming vapour compression chiller (6). The cooling effect to the end-user is provided by the evaporator on the vapour compression side (7).…”

Section: System Descriptionmentioning

confidence: 99%

“…Among the passive ones, improvement of building insulation is considered as the most effective solution to meet the regulatory requirements [2]. Concerning the active methodologies, the main route is to improve the heating and cooling systems, by enhancing the efficiency of the heating and cooling devices [3], implementing smart control strategies [4][5][6] and integrating innovative solutions at system level [7,8]. In this context, one of the main focus is on increasing the share of renewables in the heating and cooling sector.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models

et al. 2019

View full text Add to dashboard Cite

Hybrid sorption-compression systems are gaining interest for heating/cooling/ refrigeration purposes in different applications, since they allow exploiting the benefits of both technologies and a better utilization of renewable sources. However, design of such components is still difficult, due to the intrinsic complexity of the systems and the lack of reliable models. In particular, the combination of adsorption-compression cascade unit has not been widely explored yet and there are no simulations or sizing tools reported in the literature. In this context, the present paper describes a model of a hybrid adsorption-compression system, realised in Modelica language using the commercial software Dymola. The models of the main components of the sorption and vapour compression unit are described in details and their validation presented. In addition, the integrated model is used for proving the feasibility of the system under dynamic realistic conditions and an example of the technical sizing that the model is able to accomplish is given.

show abstract

Section: System Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A general equation for n stratified layers, considering i = 1 as the top layer and i = n as the bottom layer, is derived and given by (10).…”

Section: Modelling Of Eb and Storage Tankmentioning

confidence: 99%

“…[7] addresses the flexible operation of heat pumps using predictive control strategy, neglecting consumption of hot water for its highly randomized and hardly predictable nature. The predictive control of the heat pump by estimating only outdoor temperature has been studied in [10]. Thus, there is a necessity to investigate simple and effective methods to determine the influencing parameters for thermal demand prediction to manage the flexible operation of the thermal units in P2H technology.…”

Section: Introductionmentioning

confidence: 99%

Flexibility from Electric Boiler and Thermal Storage for Multi Energy System Interaction

et al. 2019

View full text Add to dashboard Cite

Active use of heat accumulators in the thermal system has the potential for achieving flexibility in district heating with the power to heat (P2H) units, such as electric boilers (EB) and heat pumps. Thermal storage tanks can decouple demand and generation, enhancing accommodation of sustainable energy sources such as solar and wind. The overview of flexibility, using EB and storage, supported by investigating the nature of thermal demand in a Danish residential area, is presented in this paper. Based on the analysis, curve-fitting tools, such as neural net and similar day method, are trained to estimate the residential thermal demand. Utilizing the estimated demand and hourly market spot price of electricity, the operation of the EB is scheduled for storing and fulfilling demand and minimizing energy cost simultaneously. This demonstrates flexibility and controlling the EB integrated into a multi-energy system framework. Results show that the curve fitting tool is effectively suitable to acknowledge thermal demands of residential area based on the environmental factor as well as user behaviour. The thermal storage has the capability of operating as a flexible load to support P2H system as well as minimize the effect of estimation error in fulfilling actual thermal demand simultaneously.

show abstract

“…However, such a controller proved to be economically unprofitable. Pospisil et al [21] proposed a predictive control, to operate the AWHP during periods with the highest outdoor temperature. Henze et al [22] used the time-of-use price signal to shift the electrical loads to off-peak periods at night and weekends in cooling applications.…”

Section: Introductionmentioning

confidence: 99%

Demand-Side Management of Air-Source Heat Pump and Photovoltaic Systems for Heating Applications in the Italian Context

2018

View full text Add to dashboard Cite

Matching demand profile and solar irradiance availability is necessary to meet space heating and domestic hot water needs by means of an air-source heat pump and photovoltaic system in a single-family house. Demand-side management, with smart control of the water storage set-point, is a simple but effective technique. Several studies in the literature pursue demand-side matching and self-consumption goals through system adjustments based on the model predictive control. This study proposes a rule-based control strategy, based on instantaneous photovoltaic (PV) power production, with the purpose of enhancing the self-consumption. This strategy exploits the building’s thermal capacitance as a virtual battery, and the thermal storage capacity of the system by running the heat pump to its limit when PV surplus power is available, and by eventually using an electric heater in order to reach higher temperatures. Results of annual dynamic simulations of a building and its heating system show that the proposed rule-based control strategy is able to reduce significantly the energy exchanges between the system and the grid. Despite the enlarged renewable energy share, economic analysis points out the pursuit of the self-consumption goal may lead to a diminution of the economic advantage in the Italian context (Italian weather data and the electric power pricing scheme).

show abstract

Potential of predictive control for improvement of seasonal coefficient of performance of air source heat pump in Central European climate zone

Cited by 35 publications

References 19 publications

Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models

Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models

Flexibility from Electric Boiler and Thermal Storage for Multi Energy System Interaction

Demand-Side Management of Air-Source Heat Pump and Photovoltaic Systems for Heating Applications in the Italian Context

Contact Info

Product

Resources

About