Flat Plate Solar Thermal System

Flat Plate Solar Pool Heater Collector | Solar Pool Heating System

I. Product Introduction

The flat plate solar pool heater collector (Solar Pool Heater Collector) is an energy-saving heating device specially designed for indoor and outdoor swimming pools, hot spring bathing pools, water parks, etc. This system is centered around an efficient flat plate collector, combined with an enamel inner tank water storage tank. It utilizes free solar energy to heat the pool water to a comfortable temperature, significantly reducing the operating costs of electric heating, gas, or heat pumps, extending the swimming season, and is an ideal choice for hotels, clubs, villas, and public swimming pools. 

The flat plate collector is equipped with a high-strength aluminum alloy frame and low iron tempered glass panel. The interior features a full copper flow channel, and the surface is covered with a highly selective heat absorption coating (blue titanium film). The absorption rate is ≥ 95%, and the emission rate is ≤ 5%. Its flat structure is resistant to wind pressure, hail, and corrosion, and is particularly suitable for humid and multi-chlorine environments around swimming pools. The collector can be connected in single or multiple groups in parallel to form a large-area heat collection array, meeting the heat requirements of different-sized swimming pools. 

The enamel inner tank is replaced with a hot water tank as the core of the heat exchange system. The inner tank is sintered at a high temperature of 850℃, with a smooth surface that does not accumulate scale and has strong corrosion resistance. This ensures that the pool water is isolated from the heat collector medium, preventing impurities from entering the heat collector and prolonging the system's lifespan. The water tank is equipped with an efficient heat exchange coil, with high heat exchange efficiency and a pressure-bearing capacity of 0.6MPa, suitable for various pool circulation pumps. 

This product is widely applicable to scenarios such as private swimming pools in villas, hotel swimming pools, fitness center swimming pools, hot spring clubs, and water parks. It is a star product for distributors and engineers to promote green swimming pool heating solutions. 

II. Technical Parameter Table

Note : ① Rated efficiency: The total irradiance on the daylighting surface of the collector is 1000W/㎡, and the temperature difference between the average temperature of the collector and the ambient air temperature is 50°C. Calculate the efficiency value of the solar collector according to the instantaneous efficiency equation of the collector's daylighting area.

② Rated power: The total irradiance of the collector lighting plane is 1000w/㎡, and the collector power when the temperature difference between the average collector temperature and the ambient air temperature is 50 ° C is equal to the product of the rated efficiency and the day lighting area and 1000W/㎡.

III. Working Principle

The flat-panel solar pool heating system operates in two modes: indirect heating and direct heating. This system recommends indirect heating to prevent the chemical substances in the pool from corroding the collectors. 

1. Solar heat collection: Sunlight passes through the tempered glass of the flat collector, is absorbed by the heat-absorbing coating, and then converted into thermal energy, which heats the antifreeze medium (food-grade propylene glycol) inside the copper tubes of the collector. 

2. Heat transfer: When the temperature of the collector is 5-10℃ higher than that of the water tank, the intelligent controller activates the circulation pump, which pumps the high-temperature anti-freezing fluid into the coil of the enamel inner tank water tank. The heat is transferred through the coil wall to the pool water inside the water tank. 

3. Pool water circulation: The circulating pump of the pool sends the water into the heat exchange tank, absorbs heat, and then returns to the pool for continuous heating. When the pool water temperature reaches the set temperature (such as 28℃), the controller automatically stops the circulating pump or switches to bypass mode. 

4. Auxiliary heating: In case of rainy days or insufficient sunlight during winter, the system can automatically activate the original electric heating, heat pump or gas boiler as a supplement to maintain the constant water temperature of the swimming pool. 

IV. Product Advantages

1. Significant energy savings, reduced operating costs

Utilizing free solar energy to heat the swimming pool can save 50% to 70% of heating expenses. For hotel swimming pools, the annual savings in electricity or gas bills can reach tens of thousands of yuan, and the investment payback period is typically 1 to 3 years. 

2. Flat plate collectors, highly efficient and durable

The flat plate collectors feature all-copper channels and highly selective heat-absorbing coatings, ensuring high efficiency even under low light conditions. The corrosion-resistant frame and tempered glass can withstand the damp and chlorine environment around the swimming pool, and have a long service life. 

3. Stainless steel inner tank water tank, resistant to corrosion and scaling

The stainless steel inner tank hot water tank is specially designed for swimming pool applications. Its surface is smooth and does not form scale. It is resistant to chlorine ions from the swimming pool and ensures long-term stable operation of the system with extremely low maintenance costs. 

4. Intelligent control, fully automatic operation

The intelligent controller automatically starts and stops the circulating pump based on temperature differences. It supports timed heating, anti-freezing protection, and setting of temperature upper limit. It can be connected to the central control system of the swimming pool to achieve remote monitoring. 

5. Modular design, flexible expansion

The number of collectors can be flexibly configured according to the size of the swimming pool, water consumption, and local sunlight conditions (from 2 sets to dozens of sets). The system is modularized, installation is quick, and it is suitable for batch construction by engineering contractors. 

6. Extend the swimming season and enhance the utilization rate of the swimming pool

During spring, autumn and early winter, the flat solar system can raise the water temperature of the swimming pool by 5-10℃, allowing the outdoor swimming pool to be open for an additional 2-3 months each year, thereby increasing the operating income of hotels or clubs. 

V. Factory Advantages

Our company is a high-tech enterprise specializing in the research, production and sales of solar collectors and enamel inner tank water tanks. We have extensive experience in swimming pool heating projects and are long-term partners of numerous distributors and engineers. 

1. Qualification Certification: The factory has obtained ISO9001 and ISO14001 certifications. The products have received international certifications such as Solar Keymark, CE, and CB, and comply with the standards for export to markets in Europe, America, and Australia, etc. 

2. Core self-production: We have an automatic production line for flat plate collectors and an enamelled inner tank sintering workshop. Key components are produced independently, ensuring controllable quality and guaranteed delivery time. 

3. Customization capability: Supports OEM/ODM. The collector size, water tank volume, control logic and support structure can all be customized according to the swimming pool project. 

4. Engineering Support: Provide system design, pipeline calculation, installation guidance and after-sales training. Offer full-process technical support for engineering companies to undertake swimming pool projects. 

5. After-sales guarantee: The entire machine is covered by a 3-year warranty, and the core components by a 5-year warranty. 

VI. List of Accessories

Flat plate collectors (configured as needed) 

Stainless steel inner tank replaced with hot water tank (with coil) 

Intelligent temperature difference controller (with sensor) 

Circulation pump (high-temperature resistant type) 

Expansion tank 

Antifreeze (food-grade propylene glycol) 

Stainless steel connection pipes and fittings 

Insulation materials (plastic-foam or glass wool) 

Installation brackets (galvanized or stainless steel) 

Check valve, filter, exhaust valve 

VII. Installation Precautions

1. Collector orientation: Facing south or 15° west of south, with an inclination angle of approximately ±10° relative to the local latitude. Avoid shading by buildings and trees. 

2. Pipeline design: The collector array adopts parallel flow in the same circuit to ensure flow balance. The circulation pipeline needs to be insulated (thickness ≥ 30mm), and the outdoor pipeline is equipped with a heating tape to prevent freezing. 

3. Water tank location: The hot water tank should be placed close to the swimming pool machine room or equipment room to minimize heat loss in the piping. A drain floor outlet is reserved at the bottom. 

4. Anti-freezing measures: The heat collection side must be filled with antifreeze fluid, and the controller should be set with low-temperature circulation protection. During the winter when the swimming pool is not in use, it should be emptied or heated to prevent freezing. 

5. Water quality requirements: The pool water should be filtered to prevent impurities from blocking the heat exchange coils. Regularly check the consumption of magnesium rods (if any). 

6. Electrical safety: The controller and water pump must be equipped with leakage protection and ensure reliable grounding. 

VIII. Application Cases 

1. Private swimming pool in villa: In a certain villa, the swimming pool has a capacity of 60 cubic meters. It is equipped with 6 sets of flat plate collectors and a 100L enamel inner tank for heat exchange. The water temperature in the swimming pool remains at 26-30℃ throughout the year, and the owner saves approximately 8,000 yuan in electricity costs annually. 

2. Hotel swimming pool: At a certain resort hotel, the outdoor swimming pool has a volume of 120 cubic meters. It is equipped with 15 sets of flat plate collectors connected in parallel, combined with the existing heat pump. In summer, it is completely powered by solar energy, and in winter, the water temperature can be increased by 5 degrees Celsius, saving 45,000 yuan in gas expenses annually. 

3. Fitness Club: A high-end fitness center with an indoor heated swimming pool of 80 cubic meters. It uses 8 sets of flat plate collectors and enamel water storage tanks to meet the heating requirements of the swimming pool and SPA pool. Members have reported that the water temperature is comfortable, and the energy consumption of the club has been reduced by 35%. 

4. Water Park: At a certain water park, the children's swimming pool has a volume of 30 cubic meters. Four sets of collectors were installed. The water temperature in summer could be raised quickly, extending the opening hours. The contractor adopted a modular design and completed the installation in just 2 days. 

IX. Development Trends

As the global focus on energy conservation and carbon reduction increases and the swimming pool market grows, the trend of solar pool heating is as follows: 

1. Flat-panelization replacing vacuum tubes: Flat solar collectors are corrosion-resistant, easy to clean, and aesthetically pleasing. They are more suitable for swimming pool environments and have seen a continuous increase in market share. 

2. Stainless steel inner tank water tanks are becoming increasingly popular: The enamel inner tank is resistant to chloride ion corrosion and has replaced stainless steel as the preferred choice for swimming pool hot water storage tanks. 

3. Multi-functional complementary intelligent control: An integrated control system combining solar energy, heat pumps, and gas boilers. It automatically switches according to weather conditions and electricity prices, achieving the lowest operating cost throughout the year. 

4. Remote monitoring and operation: The 4G/Wi-Fi controller enables users to view water temperature, flow rate, and fault alarms through the mobile app. Engineers can conduct remote diagnosis, thereby reducing the cost of after-sales services. 

5. Integrated architectural design: The flat solar collectors are combined with the swimming pool sunshade and pavilion, which is both aesthetically pleasing and practical, enhancing the quality of the villa and hotel. 

6. Summary: The Flat Plate Solar Pool Heater Collector utilizes efficient flat plate collectors and corrosion-resistant enamel inner tanks to provide a clean and economical heating solution for swimming pools, significantly reducing operating costs and extending the swimming season. We sincerely invite distributors and engineers across the country to join hands and collaborate to jointly explore the market for pool energy conservation! 

Contact us immediately to obtain the design plan for the swimming pool heating system and the dealer policies!