scope of application

Heat and heating in schools, hospitals, industrial production, etc.

Technology provider

Shandong Dr. Sunshine Solar Energy Engineering Co., Ltd.

Brief description of technology

The solar + multi-energy complementary clean heating system is used for winter building heating by coupling solar energy with one or more other clean energy sources, and can also provide a heat source for industrial and agricultural heat. Generally speaking, the system mainly consists of solar collectors, heat exchange devices, energy storage facilities, auxiliary energy heating equipment, pumps, connecting pipes and control systems, heating terminals, etc. The key to this technology is: improving the coupling effect between multiple energy sources; improving the heat collection efficiency of solar energy, the main energy source; improving the matching of energy supply system and energy use system; improving the stability and efficiency of heating system; improving the integration of renewable energy systems

technical information

Provide heat sources stably within 24 hours, improve the stability of the operation of the solar heating system, solve the problem of heat demand in non-sunny weather and at night, and achieve continuous and stable heat supply.

Commercial applications

The "Solar +" multi-energy complementary clean heating project of Zaozhuang Xiangyu Middle School is built in the eastern cultural and leisure area of the government residence of Shanting District. A total of 13468 vacuum pipes are installed in the system, with a total heat collecting area of 1952 square meters. Under the conditions that the annual average daily radiation received by the inclined surface of the heat collector is more than 15770KJ/square meters and the solar energy guarantee rate is 55%, it is necessary to raise 161 tons of water from the basic water temperature of 10℃ to 45℃ (temperature rise of 35℃) every day. When there is insufficient light, natural gas boilers and air source heat pumps are used to supplement them to meet the heating needs of the 12000 square meters of faculty and staff dormitory building. The total investment of the project is 2.16 million yuan, and the system can save 933,000 yuan per year after operation, and the cost can be recovered in about 2.31 years. After operation, the system can save 494 tons of standard coal annually; reduce dust emissions by 4.74 tons and reduce SO2 by 8.89 tons. To sum up, the economic and social benefits of the project are very significant.

Help/support you hope to receive during the technology transfer process

1. I hope that the government will provide certain support for technology promotion in terms of policy formulation. 2. Hope that the government will promote and promote technology through multiple channels

equipment investment

With Xiangyu Middle School Project (The total lighting area of the system is 1952 m², the temperature rise is 35℃, and the daily hot water is 161 tons, solving the heating problem of about 12000 square meters.) For example, the required equipment investment is 1564170 yuan, the details are as follows: 64 groups of three high heat collecting stations: 563200 yuan 20P 8 air source heat pumps: 400000 yuan 162T hot water storage tank: 250000 yuan 1 set of water processor: 65000 yuan PH-1500Q solar circulation pumps 12 sets: 44160 yuan heat collectors 13 sets: 35750 yuan KQL100/150-12.5/2 air source circulation pumps 4 sets: 34400 yuan 5P air source heat pumps 2 sets: 28600 yuan KQL100/200-18.5/2 indoor water supply circulation pumps 2 sets: 24000 yuan KQL100/150-12.5/2 plate heat exchanger heat exchange pumps 2 sets: 17200 yuan plate heat exchanger 1 set: 16800 yuan MHR-403 frequency conversion booster water supply pumps 2 sets: 15200 yuan 10T insulation water tank 1 set: 13000 yuan control system 1 set: 8600 yuan PH-750 solar circulating water pumps 3 sets: 8580 yuan PH-750 water tank inter-circulating pumps 1 set: 5720 yuan control cabinet 1 set: 3600 yuan PH-750 heat pump unit circulating water pump 1 set: 2860 yuan 1T insulation water tank 1:1500 yuan 1 set of online monitoring system: 26000 yuan Total: 1564170 yuan

Annual operation and maintenance fee

Take the Xiangyu Middle School project as an example: 1. Annual auxiliary energy costs: total energy required for daily operation = constant pressure heat capacity of water*water quality*The temperature difference of water =4.18×161000×35=23554300KJ According to the actual situation, based on the use time of 265 days per year, the energy provided by solar energy accounts for 70% of the total energy required, and the remaining 30% of the energy needs the assistance of air source heat pumps. The annual energy required by the system is: 23554300×265=6241889500KJ The energy required by auxiliary energy is: 6241889500×30%=1872566850KJ If the above energy is provided by an electric boiler, the electricity required is: 1872566850÷3600=520157.46KwH The efficiency ratio of air energy is 4, and the electricity required for air energy is: 520157.46÷4=130039.37KwH, that is, the annual auxiliary energy cost is: 130039.37KwH×1 yuan/ KwH=130039.37 yuan 2. The annual management cost is: 60000 yuan 3. The annual maintenance cost is: 35000 yuan 4. The annual water cost is: 2 yuan/ton ×161 tons ×265 days =85330 yuan 5. The annual equipment depreciation cost: 1564170×95%×10%=148596.15 yuan Total: 1+2+3+4+5=458965.52 yuan To sum up, the annual operation and maintenance cost is 458965.52 yuan.

investment recovery period

Take the Xiangyu Middle School project as an example: Calculated based on a quantitative amount of 1000kg of water, the temperature rise is 35 ° C, and the total energy required for daily operation =4.18×1000×35=146300KJ. If the above heat is completely provided by gas boilers, the gas demand for 1 ton of hot water = the total energy required for daily operation/(the calorific value of raw coal is taken as*Efficiency of the gas boiler)=146300÷ (35128×80%)=5.2 cubic meters, the gas cost is 5.2Kg×3.5 yuan/cubic meter =18.2 yuan. If maintenance, labor and other expenses are included, the daily gas cost is 19 yuan. Then, the gas cost required to heat up 161 tons of water per day is 161×19=3059 yuan, excluding rainy weather, and the annual gas cost is 305×3059=932995 yuan. The total investment of the project is 2.16 million yuan. After the system is put into operation, it can save 933,000 yuan per year, and the cost can be recovered in about 2.31 years.

added benefit

no

comprehensive benefits

After the implementation of this technical achievement, 10000 sets of solar + multi-energy complementary system products can be produced annually, with an annual heat extraction area of approximately 300,000 square meters and an additional sales revenue of 42 million yuan. The annual solar irradiance of Shandong Province is calculated as 5434 MJ/㎡, then the annual heat utilization of solar energy system = annual heat extraction area*Annual solar radiation*(1-Heat loss rate of pipelines and water tanks)*The annual average heat collection efficiency =300000×5434× (1-0.03) ×0.50 =790647000 MJ Converted into standard coal is: 790647000 ÷29307= 26,978.09 tons After all project products are put into operation, the annual social energy saving amount is 26,978.09 tons of standard coal. 1. Carbon dioxide emission reduction: Calculated based on coal energy, annual CO2 emission reduction =(annual quality of standard coal saved)*carbon emission factors*44)/12= 71,815.68 tons2. Sulfur dioxide emission reduction: When the sulfur content of the coal used is unknown, it is calculated based on the emission reduction of 0.02 kgSO2 per kilogram of standard coal, and the annual SO2 emission reduction = 26,978.09 ×0.02=539.56 tons3. Smoke emission reduction assessment: When calculating the soot emissions, the removal rate of the dust removal facility should be considered. If the removal rate is not known, it can be calculated based on the emission reduction of 0.01 kg of soot per kilogram of standard coal. The annual emission reduction of soot =26978.09×0.01=269.78 tons In summary, this technical achievement has significant economic and social ecological benefits.

Level of impact of obstacles on technology transfer

no

technology maturity

The technical maturity of solar + multi-energy complementary clean heating system is at the medium level. With the rapid development of cross-integration in the field, new technologies, new applications and new demands are constantly being promoted and updated, from traditional solar stand-alone, balcony wall-mounted solar energy to solar hot water systems, industrial heat utilization, solar heating, solar drying, seawater desalination and other fields, and solar heat utilization technology is undergoing an unprecedented stage. This technology combines solar energy with various systems such as air source heat pumps, gas boilers, electric boilers, and biomass, and the integration of equipment and systems has become more complete. Working mode: 1. Hot water mode: When solar energy is sufficient, the heat collector directly heats the hot water in the water tank for user use; when solar energy is insufficient, the low-temperature hot water in the water tank enters the dual heat source heat pump unit for auxiliary energy heating, and the heated high-temperature hot water is sent indoors for user use. When there is no sun, the air source heat pump directly heats the hot water. When the water temperature in the water tank meets the requirements, the heat pump unit discharges water for users to use. 2. Heating conditions in winter. Switch the four-way reversing valve to change the flow direction of refrigerant in the pipeline, so that the refrigerant partially absorbs heat from the outdoor unit and supplies heat to the indoor unit.① When solar energy is sufficient, hot water of a certain temperature is generated and used for heat exchange on the evaporator side. The water tank is used as an outdoor water-cooled evaporator, and the indoor unit provides heat.② When solar energy is insufficient, start the air source heat pump. The air-cooled outdoor unit serves as the evaporator, the indoor unit provides heat, and the electric heating is started to produce hot water.③ When a small amount of hot water needs to be prepared, connect the water tank to the pipeline system, use the air-cooled outdoor unit as the evaporator, and the water tank as the condenser.

technical applicability

This technical product has the characteristics of reliable operation, low cost, simple installation, and good energy-saving effect. This technical product can be applied to enterprises and institutions, factories, colleges, hotels, hospitals, communities, swimming pools and other areas with good sunshine resources and need heating; solar hot air rural household heating, industrial heat utilization and other fields, with an extremely wide application range and huge market prospects. There are certain requirements for the installation location: sufficient light, no blocking around; sufficient installation area. Because this technical product uses an intelligent control system, it is very convenient to use and maintain, and personnel can operate it after simple training.

technical stability

This technical product operates stably and couples solar energy with one or more other clean energy sources. It can stably provide heat source within 24 hours, solve the heat demand problem in non-sunny weather and night, and achieve continuous and stable heat supply. This technology product has a designed service life of 15 years.

technical safety

This technology mainly uses clean energy for heating, and will not cause secondary pollution, leakage of flammable, explosive and toxic substances and other environmental and safety accidents during application. This technology product has the characteristics of simple installation, low usage costs, fast investment recovery, wide application range, and good energy conservation and emission reduction effects. Coupled with national policy support, it has greatly promoted market promotion.

Barriers to technology transfer and promotion

no

intellectual property transfer

The "solar energy + multi-energy complementary clean heating system" technology has currently obtained 3 authorized patents: Solar energy collector tube (Invention patent, patent number ZL201510480679.3), solar energy, air source heat pump dual heat source triple power supply system (Utility model patent, patent number ZL201620599120.2), a phase change energy storage solar fresh air heating system (utility model patent number ZL201821924776.2); Computer software copyright registration certificate 1: Dr. Sunshine fully automatic solar intelligent control system V1.0 (Certificate No.: Certificate No.: Ruanzideng Zi No. 5342358). The above intellectual property achievements are all owned by Shandong Sunshine Dr. Solar Engineering Co., Ltd., and the localization degree of key links, processes and equipment of this technology is 100%. At present, Dr. Shandong Sunshine Solar Engineering Co., Ltd. has no intention of transferring technology, but for intellectual property rights, the company has established and improved an intellectual property management system and obtained an intellectual property management system certification certificate; the Zaozhuang City government has also issued corresponding policies for intellectual property transfer.