Hello, I have a few questions for calculating heat tranmission between materials ( i need some formulas and tips). First of all i need to find out how much energy a water pipe transmit to the concrete where it is in. I couldn't find a formula for this one. Then the concrete should store some heat which i can calculate with Φ = m * c * Δ T, right? The concrete will lose some energy to the air. How can i calculate how much heat the concrete will "lose" to the air? I hope somone could help me with these questions!