Can Thermal Mass Be Used in Mobile Off-Grid Homes?

Designing for Thermal Mass in Mobile Homes

Mobile homes with thermal mass can benefit from the stored heat of the mass during nighttime hours or on cloudy days. For effective thermal mass, use materials like concrete, brick, or insulated concrete forms (ICFs) that have a high specific heat capacity, typically above 0.2 Btu/lb°F. A 4-inch thick concrete wall can store 12.8 Btu/ft² of heat.

Incorporating Thermal Mass in Mobile Home Layouts

Incorporating thermal mass into a mobile home layout often involves placing it in areas where the temperature fluctuations will be most noticeable, such as living spaces and bedrooms. A well-insulated, south-facing wall with a 6-inch thick concrete block interior can effectively absorb and release heat, maintaining a consistent indoor temperature. Consider using a 2-foot deep thermal mass wall section to effectively store and release heat.

Integrating Thermal Mass with Passive Solar Heating

When integrating thermal mass with passive solar heating, consider the home’s orientation and window placement. A south-facing window should ideally receive direct sunlight for 3-4 hours during peak winter months to effectively charge the thermal mass. Using a thermal mass wall with a window placement 6 feet off the ground can help minimize heat loss during nighttime hours, while allowing solar gain during the day.