Hi, I shall be grateful if someone can help with this fundamental understanding, Thermal resistance (in case of conduction mode of heat tarnsfer) can be defined as; Rt = L / kA where k is the thermal conductivity Thus. thermal resistance if inversely proportional to the thermal conductivity.. Low thermal conductivity means high thermal resistance My question is; 1) What is good? To have high thermal resistance or low thermal resistance? 2) High thermal resistance would result less heat transferred per unit area. Right? 3) So, am I right in saying that whether you need high thermal resistance or low thermal resistance is problem dependent? Sorry for being too basic.