Hello. I need calculation of thermal conductivity of my sample floating on water. Sample material hydrophilic yarn Water amount: 300g Water initial temperature: 24.6C Water final temperature after one hour: 26.1C Sample surface temperature: 34C Sample area: 40 cm2 Sample area in contact with water 1/3 means 13cm2 I need step by step calculations

Hello. I need calculation of thermal conductivity of my sample floating on water. Sample material hydrophilic yarn Water amount: 300g Water initial temperature: 24.6C Water final temperature after one hour: 26.1C Sample surface temperature: 34C Sample area: 40 cm2 Sample area in contact with water 1/3 means 13cm2 I need step by step calculations