Trocadores de Calor para Piscinas

Selecionar o trocador de calor correto é muito importante para garantir que a piscina aqueça rapidamente até a temperatura desejada. As principais questões a serem consideradas ao dimensionar um trocador de calor de piscina são:

1. Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
2. Como é aquecida? Normalmente, a escolha é uma caldeira ou energia renovável. Se for a energia renovável, selecione um trocador de calor especialmente criado para a água de baixa temperatura fornecida por painéis solares ou bombas de calor, pois essas unidades precisam de menos energia para aquecer a piscina até a temperatura necessária.
3. Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
4. What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. No entanto, com caudais mais altos, o tempo necessário para circular a água da piscina irá reduzir e até mesmo um pequeno aumento na temperatura da água da piscina através do trocador de calor (1,5 °C, por exemplo) terá um efeito maior na eficiência de aquecimento da piscina.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’

Selecionar o trocador de calor correto é muito importante para garantir que a piscina aqueça rapidamente até a temperatura desejada. As principais questões a serem consideradas ao dimensionar um trocador de calor de piscina são:

1. Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
2. Como é aquecida? Normalmente, a escolha é uma caldeira ou energia renovável. Se for a energia renovável, selecione um trocador de calor especialmente criado para a água de baixa temperatura fornecida por painéis solares ou bombas de calor, pois essas unidades precisam de menos energia para aquecer a piscina até a temperatura necessária.
3. Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
4. What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. No entanto, com caudais mais altos, o tempo necessário para circular a água da piscina irá reduzir e até mesmo um pequeno aumento na temperatura da água da piscina através do trocador de calor (1,5 °C, por exemplo) terá um efeito maior na eficiência de aquecimento da piscina.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’

Selecionar o trocador de calor correto é muito importante para garantir que a piscina aqueça rapidamente até a temperatura desejada. As principais questões a serem consideradas ao dimensionar um trocador de calor de piscina são:

1. Pool size – what is the water capacity? Heat exchangers are sized according to capacity, so a unit designed to heat a 80 m³ (18,000 gal) pool would be no use, if you have an 180 m³ (39,500 gal) pool.
2. Como é aquecida? Normalmente, a escolha é uma caldeira ou energia renovável. Se for a energia renovável, selecione um trocador de calor especialmente criado para a água de baixa temperatura fornecida por painéis solares ou bombas de calor, pois essas unidades precisam de menos energia para aquecer a piscina até a temperatura necessária.
3. Boiler water temperature – however, most pools will be heated by boilers, so what is the temperature of the boiler water? Usually, it’s between 80 °C and 85 °C – the ideal temperature for pool heating. Some boilers are lower – around 60 °C. So, using 82 °C water, a heat exchanger providing 110 kW should heat your 180 m³ pool efficiently. But if the boiler water temperature is only 60 °C, the heat available to transfer drops to around 60 kW – a reduction of over 40%, so a larger heat exchanger would be required for the pool to achieve full temperature.
4. What are the water flow rates? Flow rates are vital for the heat exchanger to transfer thermal energy to the pool. If the hot water flow rate is too low, the available energy will not be passed through the heat exchanger. However, the flow rate of the pool water is equally important. People often think it is important to generate a large temperature differential between the pool water entering and leaving the heat exchanger. They are happy, if the pipework connected to the outlet of the heat exchanger is noticeably warmer than it is at the inlet. In reality, this actually reduces the efficiency of the heat transfer process! This is because the pool water flow is too low – the water remains in the heat exchanger for too long, so a much smaller volume of water is being heated to a slightly higher temperature. No entanto, com caudais mais altos, o tempo necessário para circular a água da piscina irá reduzir e até mesmo um pequeno aumento na temperatura da água da piscina através do trocador de calor (1,5 °C, por exemplo) terá um efeito maior na eficiência de aquecimento da piscina.

More information about heat exchanger selection, read the article ‘Why doesn’t my pool heat up faster?’