Quick Answer
Temperature changes can affect propane tank pressure, causing expansion or contraction that may lead to increased pressure or reduced capacity.
Understanding Propane Tank Pressure Changes
Temperature fluctuations can impact propane tank pressure due to the thermal expansion and contraction of propane. As temperature rises, propane expands, increasing pressure inside the tank. Conversely, when temperature drops, propane contracts, reducing pressure. This phenomenon is significant in propane tank sizing, as it affects the tank’s capacity and safety. For every 10°F (5.6°C) temperature rise, propane pressure increases by approximately 1.1 psi (76 kPa). This means that a propane tank designed for 100°F (37.8°C) may experience a 10.7 psi (735 kPa) pressure increase at 110°F (43.3°C).
Calculating Propane Tank Sizing for Temperature Changes
To account for temperature changes, propane tank sizing calculations must consider the temperature range the tank will operate in. A safe margin of 10-20°F (5.6-11.1°C) is often recommended to prevent over-pressurization. Using a propane tank sizing calculator or consulting the propane tank manufacturer’s guidelines can provide a more accurate estimate of the required tank size. For example, a 500-gallon (1893.4 L) propane tank designed for 100°F (37.8°C) may require a larger tank capacity, such as 550-600 gallons (2075.4-2271.4 L), to account for the increased pressure at higher temperatures.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.