TY - RPRT TI - Experimental study on the performance of a combination appliance for domestic hot water and space heating AU - Liu, Stanley T AU - Kelly, George E AU - Terlizzi, Charles P PY - 1990 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 4356 DO - 10.6028/NIST.IR.4356 ER -