With China''s ambitious goals of carbon capping by 2030 and carbon neutrality by 2060, the multi-energy coupled clean heating technology represented by
Read MoreEnergy efficient integration of heat pumps into solar district heating systems with seasonal thermal energy storage Energy Procedia, 57 ( Jan. 2014 ), pp. 2706 - 2715, 10.1016/j.egypro.2014.10.302
Read MoreThe two main factors that determine the efficiency of seasonal thermal energy storage with a heat pump are the solar fraction (SF) and coefficient of
Read MoreFor higher temperature, an auxiliary electric heater with 9 kW heating power is installed at the top of the storage tank to work simultaneously with the heat pump if needed. The studied sizes of the hot water storage tanks are 0.3–1.5 m 3 .
Read MoreThe main objective of this study is to illustrate the energy-efficiency benefits of dual-tank latent heat storage (DLHS) installed in a solar heat-pump heating system (SHPHS). We designed and constructed an SHPHS–DLHS and tested it in the meteorological conditions of Beijing, China.
Read MoreWhat is more, few researchers investigated the joint optimization of operation among the multi-energy devices and wind power considering soil heat cross-season balance. Based on the above discussion, in this paper, we analyze the principle of TES and GHSP in broadening the working domain of CHP.
Read MoreOptimal control study of solar-air source heat pump coupled heating system operation Xulin Li 1, Shiyuan Liu 1 and Yunlong Wang 1 Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 2474, The 2nd International Conference on New Energy and Power Engineering (ICNEPE 2022)
Read MoreLong and Zhu [132] uses paraffin (56#) for thermal storage in an air source heat pump water heater to take advantage of the off-peak electrical energy. In this way, the energy is more effective. Later, Agyenim and Hewitt [38] researched the same concept with finned RT58 and recently improved it [133] .
Read MoreThe results show that the integrated energy system with a ground source heat pump and seasonal thermal energy storage device can effectively reduce the cost of the operation planning by 9.1 %. The cost of purchased energy and carbon emissions have also been reduced by 23.4 % and 12.6 %, respectively.
Read MoreVapour compression heat pump provides efficient cooling and heating through the use of various renewable energy sources and plays a significant role in the energy conservation of modern buildings. Its performance enhancement gains increasing attention under the background of conventional energy and environmental crisis.
Read More40 ′N), and the heating energy efficiency coefficients were 3.83 and 3.91, respectively. stops running. In the non-heating season, the heat in the heat storage tank is transferred to the soil around the GHE
Read MoreDuring the heating period, the high-temperature water source heat pump (WSHP) is responsible for increasing the heat energy transferred from the EST for heating. The average inlet water temperature at the heat source side of the WSHP during the heating period is 12.8 °C, the average outlet water temperature is 11.9 °C.
Read MoreBased on the cross-season solar thermal storage heating system (CSTSHS) in a typical Alpine town in the west of China, this paper analyzes and
Read MoreThe lower the soil temperature, the better the thermal storage effect of energy tower system for soil. The thermal storage power and environmental temperature change in a positive relationship. It is proved that the application of cross-season heat storage is feasible for energy tower coupled with buried pipe system of ground-source
Read MoreBy combining the power system with the heat storage system, the excess renewable energy can be stored in the form of heat energy, which can be converted into
Read MorePCM energy storage and PV/T coupled multi-source heat pump systems were combined. • The thermal performance, energy efficiency, and economy of the system were analyzed. • The performance of paraffin C17 and water as energy storage materials were
Read MoreThe thermal storage power and environmental temperature change in a positive relationship. It is proved that the application of cross-season heat storage is
Read MoreThe integrated use of multiple renewable energy sources to increase the efficiency of heat pump systems, such as in Solar Assisted Geothermal Heat Pumps
Read MoreSeasonal thermal energy storage ( STES ), also known as inter-seasonal thermal energy storage, [1] is the storage of heat or cold for periods of up to several months. The thermal energy can be collected whenever it is available and be used whenever needed, such as in the opposing season. For example, heat from solar collectors or waste heat
Read More2.1 Working Principle of Heat Storage DeviceA common phase variant solid state heat storage device is shown in Fig. 1 s main components are heating part, heat storage part, heat exchange part, heating part and control unit (the position of each part is shown in
Read MoreA novel LHSU was developed for a sustainable and efficient heat pump system. • A new DPSC was designed for the SAHP system. • The highest heating COP value of 3.63 was obtained in the SAHP system. • The average thermal efficiency of the DPSC could be
Read MoreAlso, thermal energy storage has been shown to be advantageous in increasing energy efficiency of buildings and in reducing their energy cost [12], [13], [14]. Arteconi et al. [15] found that combination of the DR
Read MoreTo solve a series of problems for ASHP at low ambient temperature, various researches are conducted from the following aspects. (i) Cycle design of new ASHP: quasi-two-stage compression, two-stage compression, and cascade compression. Roh and Kim [15] experimentally studied heating performance of an ASHP with an intermediate
Read MoreThe participation of multi-energy coupling components in economic dispatch, such as combined heat and power unit (CHP), thermal energy storage (TES),
Read MoreThe maximum energy storing capacity (Q max) in [J] of a thermal energy storage system is often found using Equation (1).(1) Q m a x = V ∗ u ∗ ρ ∗ c p ∗ (T t o p − T b) where V is the volume of the storage [m 3], u is the % of the volume that can be utilised, ρ is the density of the water [kg/m 3], c p is the specific heat capacity of the water
Read MoreUtilize all year long – Your heat pump is more energy-efficient than a furnace or boiler, even during winter. If you have both, you should use your heat pump year-round. Stick with a steady temperature – Unlike a furnace or boiler, heat pumps do not save energy by turning it down when you''re away or asleep.
Read MoreHeat pump heating mode: At night or on rainy days, if the solar collector internal temperature (T 1) is less than the ambient temperature Solar thermal energy storage and heat pumps with phase change materials
Read MoreIt can be of a mutual economic interest for both the supplier and user side to apply demand side management on heating load through mature and affordable technologies, e.g. thermal energy storage (TES) [9].Hewitt [10] pointed out in a scenario analysis that, on the user side, the role of TES should not be underplayed for promoting
Read MoreExperimental research of an air-source heat pump water heater using water-PCM for heat storage 2017 [34] DHW Experimental Air R134a/R410A 3.1 kW 55 C Paraffin RT44HC, T m 43 C, height 100 cm, 40 cm diameter water tank, 9.1 kg PCM Investigation on
Read MoreA new Energy Efficient Extrusion Factory concept was developed. • Extensive waste heat recovery was achieved using an improved hot water bath. • A high temperature heat pump and latent heat storage enable waste heat utilization. •
Read MorePlateau cold regions are characterized with harsh climate conditions and challenging transportation. According to the climate characteristics and indoor load demands in such
Read MoreIn order to improve the energy efficiency of solar heat pump systems, some scholars added phase change heat storage (PCES) devices in heat pump systems. Esen and Ayhan, 1996, Esen et al., 1998, Esen, 2000 simulated and optimized the performance of the PCES device in a solar assisted heat pump system, determined its
Read MoreSEER2 – Seasonal Energy Efficiency Rating 2 is the most commonly used efficiency rating for both heat pumps in cooling mode and air conditioners. HSPF2 – Heating Seasonal Performance Ratio 2 is used to measure a heat pump''s heating efficiency. Keep in mind that the above ratings are used for typical split-system, residential, air-source
Read MoreAs the photovoltaic (PV) industry continues to evolve, advancements in cross-season energy storage heat pump heating efficiency have become instrumental in optimizing the utilization of renewable energy sources. From innovative battery technologies to smart energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
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