DOE-2 Reference Manual Version 2.1 - DOE2.com

COOLING-E IRfor other temperature values. The equation should benormalized so that at rated conditions its value is 1.0(that is, where the total cooling capacity equalsCOOLING-CAPACITY). If this keyword is specified, the usershould also specify COOL-SH-CAP.is the Electric Input Ratio, or 11Coefficient of Performance,for the cooling unit at ARI rated conditions.Electric Input Ratio is defined in DOE-2 to be the ratioof the electric energy input (in Btu/hr) to the ratedcapacity (in Btu/hr). This EIR is at the ARI rated conditions,that is, without corrections for differenttemperatures and part loads. Note: If the fan electricenergy consumption is included in this user-specifiedCOOLING-EIR, SUPPLY-KW in SYSTEM-FANS should be set equalto zero (and SUPPLY-STATIC, SUPPLY-EFF, and SUPPLY-DELTA-Tshould be omitted). Otherwise, double accounting forsupply fan electrical energy will be experienced. Thedefault COOLING-EIR (for commercial systems) alreadyincludes compressor and outdoor fan energy, but not indoorfan energy.COOL-EIR-FT * is the U-name of a bi-linear or bi-quadratic equation thatdescribes the Electric Input Ratio for cooling (dependentvariable) as a function of entering wet-bulb temperature(independent variable) and outdoor dry-bulb temperature(independent variable) for direct expansion systems orentering wet-bulb temperature (independent variable)-andentering water temperature (independent variable) for anHP, water-to-air heat pump, system. The equation shouldoe-normallzed so that at rated conditions its value is 1.0(that is, where the full load rated electric input ratiofor cooling equals COOLING-EIR). The keyword is unusedwith chilled water coils.COOL-EIR-FPLR * is the U-name of a linear, quadratic, or cubic equationthat describes the Electric Input Ratio for cooling(dependent variable) as a function of part load ratio,PLR, (independent variable). The keyword is unused withchilled water coils. The linear, quadratic, or cubicequation must be input to the program and U-named in aCURVE-FIT instruction. The equation should be normalizedso that at rated conditions its value is 1.0.* Input for this keyword should be made only if the user is not satisfiedwith the default values built into the program. Additionally, if theuser decides to specify a U-name, it should not be one of the reserved"Default Curve U-names" in Table I V. 39. Furthermore, these U-names areapplicable only to the SYSTEM-TYPEs stated in the table.IV.244 (Revised 5/81)