A portable moist heat delivery system comprising a water vapor generating portion comprising a water vapor source and a heat source； a water vapor-air regulating portion, said water vapor-air regulating portion comprising a water vapor-air mixing layer, and a water vapor-air distribution layer； said water vapor generating portion and said water vapor-air regulating portion being in fluid communication； and said water vapor-air regulating portion having a latent heat delivery surface disposed adjacent said water vapor-air regulating portion which delivers moist heat at a preselected temperature range wherein about 15% to about 95% of the moist heat is latent heat of condensation. Methods include delivering improved pain relief, blood flow, relaxation, and reduced cardiac workload.一種可攜式濕熱傳送系統，其包含：一包含一水蒸氣源及一熱源之水蒸氣產生部分；一水蒸氣-空氣調節部分，該水蒸氣-空氣調節部分包含一水蒸氣-空氣混合層及一水蒸氣-空氣分布層；該水蒸氣產生部分與該水蒸氣-空氣調節部分流體連通；且該水蒸氣-空氣調節部分具有一在一預先選定之溫度範圍下傳送濕熱的鄰近該水蒸氣-空氣調節部分而安置之潛熱傳送表面，其中該濕熱之約15%至約95%為凝結之潛熱。方法包括實現改善疼痛緩解、血液流量、放鬆及減少心臟工作負荷。
