Scambiatori di Calore a Fascio Tubiero

La scelta dello scambiatore di calore corretto è molto importante per garantire che l’acqua della piscina arrivi rapidamente alla temperatura desiderata. Le principali questioni da considerare nella scelta di uno scambiatore di calore per piscina sono:

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. Come si riscalda? Di solito la scelta è una caldaia o un’energia rinnovabile. Se si tratta di energia rinnovabile, seleziona uno scambiatore di calore appositamente progettato per l’acqua a bassa temperatura fornita dai pannelli solari o dalle pompe di calore, poiché queste unità richiedono meno energia per riscaldare l’acqua della piscina alla temperatura richiesta.
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. Tuttavia, con portate più elevate, il tempo necessario per riscaldare l’acqua della piscina si riduce e anche un piccolo aumento della temperatura dell’acqua della piscina attraverso lo scambiatore di calore (ad esempio 1,5 °C) migliorerà l’efficienza del riscaldamento della piscina.

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

La scelta dello scambiatore di calore corretto è molto importante per garantire che l’acqua della piscina arrivi rapidamente alla temperatura desiderata. Le principali questioni da considerare nella scelta di uno scambiatore di calore per piscina sono:

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. Come si riscalda? Di solito la scelta è una caldaia o un’energia rinnovabile. Se si tratta di energia rinnovabile, seleziona uno scambiatore di calore appositamente progettato per l’acqua a bassa temperatura fornita dai pannelli solari o dalle pompe di calore, poiché queste unità richiedono meno energia per riscaldare l’acqua della piscina alla temperatura richiesta.
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. Tuttavia, con portate più elevate, il tempo necessario per riscaldare l’acqua della piscina si riduce e anche un piccolo aumento della temperatura dell’acqua della piscina attraverso lo scambiatore di calore (ad esempio 1,5 °C) migliorerà l’efficienza del riscaldamento della piscina.

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

La scelta dello scambiatore di calore corretto è molto importante per garantire che l’acqua della piscina arrivi rapidamente alla temperatura desiderata. Le principali questioni da considerare nella scelta di uno scambiatore di calore per piscina sono:

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. Come si riscalda? Di solito la scelta è una caldaia o un’energia rinnovabile. Se si tratta di energia rinnovabile, seleziona uno scambiatore di calore appositamente progettato per l’acqua a bassa temperatura fornita dai pannelli solari o dalle pompe di calore, poiché queste unità richiedono meno energia per riscaldare l’acqua della piscina alla temperatura richiesta.
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. Tuttavia, con portate più elevate, il tempo necessario per riscaldare l’acqua della piscina si riduce e anche un piccolo aumento della temperatura dell’acqua della piscina attraverso lo scambiatore di calore (ad esempio 1,5 °C) migliorerà l’efficienza del riscaldamento della piscina.

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