HE is "Heat of Exchange". It's in the specification charts such that HE = source flow rate (GPM) * delta temp * 485. In this case with ground EWT @ 40 and Load EWT @ 100, the HE should be 24,400 btu. The oil was between the top of the valve and the diaphragm. The diaphragm is sealed with a capillary tube to a bulb that attaches (clamped) on the suction line by the compressor. There is another capillary tube that is brazed into the suction line several inches before where the bulb is attached. So if a TXV is clogged with oil, can this be resolved without replacing it?