A new design concept of thermal storage tank for adaptive heat charging in solar heating system

2020 ◽  
Vol 165 ◽  
pp. 114617
Author(s):  
Jiarong Li ◽  
Xiangdong Li ◽  
Ruiqing Du ◽  
Yong Wang ◽  
Jiyuan Tu
Keyword(s):  
Storage Tank ◽  
Thermal Storage ◽  
Heating System ◽  
Solar Heating ◽  
Design Concept

scholarly journals Optimization Analysis on Storage Tank Volume in Solar Heating System

2015 ◽  
Vol 121 ◽  
pp. 1356-1364 ◽  
Author(s):  
Tao Li ◽  
Yanfeng Liu ◽  
Dengjia Wang ◽  
Kaifeng Shang ◽  
Jiaping Liu
Keyword(s):  
Storage Tank ◽  
Heating System ◽  
Solar Heating ◽  
Optimization Analysis

scholarly journals MODELLING THE SIZE OF SEASONAL THERMAL STORAGE IN THE SOLAR DISTRICT HEATING SYSTEM / SEZONINĖS ŠILUMOS AKUMULIACINĖS TALPYKLOS TŪRIO MODELIAVIMAS CENTRALIZUOTOJE SAULĖS ŠILDYMO SISTEMOJE

2012 ◽  
Vol 5 (4) ◽  
pp. 499-506
Author(s):  
Giedrė Streckienė ◽  
Salomėja Bagdonaitė
Keyword(s):  
Storage System ◽  
Boiler House ◽  
Thermal Storage ◽  
Heating System ◽  
Solar Heating ◽  
System Modelling ◽  
Solar Thermal Energy ◽  
District Heating System ◽  
Climate Conditions ◽  
Heat Demand

The integration of a thermal storage system into the solar heating system enables to increase the use of solar thermal energy in buildings and allows avoiding the mismatch between consumers’ demand and heat production in time. The paper presents modelling a seasonal thermal storage tank various sizes of which have been analyzed in the district solar heating system that could cover a part of heat demand for the district of individual houses in Vilnius. A biomass boiler house, as an additional heat source, should allow covering the remaining heat demand. energyPRO software is used for system modelling. The paper evaluates heat demand, climate conditions and technical characteristics. Santrauka Šilumos akumuliavimo sistemos integracija į saulės šildymo sistemą suteikia galimybę padidinti Saulės šiluminės energijos panaudojimą pastatuose, nes tai leidžia išvengti vartotojų poreikio ir šilumos gamybos nesutapimo laike. Šiame darbe modeliuojama sezoninė šilumos akumuliacinė talpykla, analizuojami įvairūs jos dydžiai centralizuotoje saulės šildymo sistemoje. Nagrinėjama sistema galėtų užtikrinti dalį individualių namų mikrorajono, esančio Vilniuje, šilumos poreikių. Kaip papildomas šilumos šaltinis modeliuojama biokuro katilinė, kuri leistų užtikrinti likusią šilumos poreikių dalį. Modeliavimas atliekamas energyPRO programa įvertinant pastatų poreikius, klimatines sąlygas ir technologines įrenginių charakteristikas.

Indoor Air Temperature Analysis of Solar Heating System With Dual Heat Storage Devices

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
Yu Qihui ◽  
Hao Xueqing ◽  
Tan Xin
Keyword(s):  
Mathematical Model ◽  
Air Temperature ◽  
Indoor Air ◽  
Storage Tank ◽  
Heat Storage ◽  
Heating System ◽  
Solar Heating ◽  
Minimum Size ◽  
Temperature Characteristics ◽  
Storage Devices

Using solar energy for space heating is an efficient and simply way to satisfy the energy demands of buildings. In this study, a typical office building is selected as a case model to obtain indoor air temperature characteristics with dual heat storage devices. By analyzing our solar heating system, a mathematical model of the system working process is set up. Using the software matlab/simulink for simulation, the indoor air temperature characteristics in 1 day are obtained. Simulation and experimental results show good consistency. And using the mathematical model, the storage tank size is optimized to search for the minimum size for the fixed building. Based on our analysis, the optimum ratio of storage tank A volume and collector field area is 0.11 m. This research can be a good reference for the design of the solar heating system.

Design of a Combined Solar Dryer: Thermal-Photovoltaic for the Treatment of Grains

2006 ◽  
Author(s):  
I. Pilatowsky ◽  
D. Gama ◽  
J. Ortega ◽  
J. Campos ◽  
R. Best ◽  
...  
Keyword(s):  
Rural Areas ◽  
Storage Tank ◽  
Thermal Storage ◽  
Operating Conditions ◽  
Solar Heating ◽  
Photovoltaic System ◽  
Added Value ◽  
Solar Array ◽  
Solar Air Heater ◽  
Technical Problems

Solar drying is one of the most vastly used technologies in rural areas, especially in developing countries, allowing for self provision and commercialization of products with an added value. Among the technical problems encountered, is the control of the operating conditions, due mainly to the intermittency of solar radiation which in turn produces a non homogeneous treatment of the product making it necessary to control both temperature and air velocity. Considering these facts, the design of a dryer for the treatment of grains is proposed, with the intention of obtaining control on the kinetics of drying using direct or indirect solar heating and electrical energy storage from a solar photovoltaic system within established air velocities and temperatures ranges. The energy required for the grain treatment is provided by a solar thermal-photovoltaic multipurpose solar unit installed in the solar testing platform at CIE-UNAM. Solar heating can be carried out by indirect heating of air using a thermo hydronic system with a water to air heat exchanger or by means of an one pass solar air heater. The heating of air can be direct during the day or using thermal storage both at night as well as the following day. The dryer can be operated during the day or the night or 24 hours a day if it is required, depending on the thermal and photovoltaic system configurations. The photovoltaic system is composed of photovoltaic panels, batteries and a charge controller and it has been designed to operate the fan motor as well as the lamps in the night time, however a total solar operation is possible by activating circulation pumps between the solar array and the dryer, between the solar collectors field and the thermal storage tank and between the storage tank and the dryer. Part of the electricity generated is for day use for the fan and the other electric components and the rest is stored for night utilization. This paper presents the conditions and parameters for the design of the grain dryer, the different heating circuits and the integration aspects of measurement and control devices of the multipurpose solar unit, as well as the operating modes.

FREEZE PROTECTION METHOD USING HOT WATER FOR PASSIVE SOLAR WATER HEATING SYSTEM

2012 ◽  
Vol 20 (04) ◽  
pp. 1250021 ◽  
Author(s):  
HIKI HONG ◽  
JONG HYUN KIM ◽  
JAE DONG CHUNG ◽  
HIROYUKI KUMANO ◽  
DOUGLAS REINDL
Keyword(s):  
Storage Tank ◽  
Cold Water ◽  
Thermal Storage ◽  
Heating System ◽  
Hot Water ◽  
Water Pipe ◽  
Solar Water ◽  
Protection Method ◽  
Passive Solar ◽  
Freeze Protection

In the present work, a new freeze protection method is introduced with intended applications for passive solar water heaters. Though electro-thermal wire heat tracing is popularly used to prevent freezing with subsequent risk of burst, this approach is problematic due to resistance heater failure and excessive electric power consumption. In the experimental device, hot water in thermal storage tank is used to heat the outlet pipe from the tank when the surface temperature of the pipe falls lower than a pre-determined set point. The cold water pipe to the thermal storage tank is installed in direct contact with the hot water pipe, controlling its temperature by conduction with the hot water pipe.

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