col : pump type and source | typical use | 35 degc (e.g. heated screed floor) | 45 degc (e.g. heated screed floor) | 55 degc (e.g. heated timber floor) | 65 degc (e.g. radiator or dhw) | 75 degc (e.g. radiator and dhw) | 85 degc (e.g. radiator and dhw) row 1 : high-efficiency air source heat pump (ashp), air at -20 | nan | 2.2 | 2.0 | - | - | - | - row 2 : two-stage ashp, air at -20 degc | low source temperature | 2.4 | 2.2 | 1.9 | - | - | - row 3 : high efficiency ashp, air at 0 degc | low output temperature | 3.8 | 2.8 | 2.2 | 2.0 | - | - row 4 : prototype transcritical co 2 (r744) heat pump with trip | high output temperature | 3.3 | - | - | 4.2 | - | 3.0 row 5 : ground source heat pump (gshp), water at 0 degc | nan | 5.0 | 3.7 | 2.9 | 2.4 | - | - row 6 : gshp, ground at 10 degc | low output temperature | 7.2 | 5.0 | 3.7 | 2.9 | 2.4 | - row 7 : theoretical carnot cycle limit, source -20 degc | nan | 5.6 | 4.9 | 4.4 | 4.0 | 3.7 | 3.4 row 8 : theoretical carnot cycle limit, source 0 degc | nan | 8.8 | 7.1 | 6.0 | 5.2 | 4.6 | 4.2 row 9 : theoretical lorentzen cycle limit (co 2 pump), return | nan | 10.1 | 8.8 | 7.9 | 7.1 | 6.5 | 6.1 row 10 : theoretical carnot cycle limit, source 10 degc | nan | 12.3 | 9.1 | 7.3 | 6.1 | 5.4 | 4.8
what are the variations noted for all pumps at both 35 and 45 degrees? of these, which variations are listed two or more times?
2.2, 2.2, 8.8, 8.8
Pump type and source Typical use 35 degC (e.g. heated screed floor) 45 degC (e.g. heated screed floor) 55 degC (e.g. heated timber floor) 65 degC (e.g. radiator or DHW) 75 degC (e.g. radiator and DHW) 85 degC (e.g. radiator and DHW)
of these, which variations are listed two or more times?
High-efficiency air source heat pump (ASHP), air at -20 nan 2.2 2.0 - - - -
Two-stage ASHP, air at -20 degC Low source temperature 2.4 2.2 1.9 - - -
High efficiency ASHP, air at 0 degC Low output temperature 3.8 2.8 2.2 2.0 - -
Prototype transcritical CO 2 (R744) heat pump with trip High output temperature 3.3 - - 4.2 - 3.0
Ground source heat pump (GSHP), water at 0 degC nan 5.0 3.7 2.9 2.4 - -
GSHP, ground at 10 degC Low output temperature 7.2 5.0 3.7 2.9 2.4 -
Theoretical Carnot cycle limit, source -20 degC nan 5.6 4.9 4.4 4.0 3.7 3.4
Theoretical Carnot cycle limit, source 0 degC nan 8.8 7.1 6.0 5.2 4.6 4.2
Theoretical Lorentzen cycle limit (CO 2 pump), return nan 10.1 8.8 7.9 7.1 6.5 6.1
Theoretical Carnot cycle limit, source 10 degC nan 12.3 9.1 7.3 6.1 5.4 4.8
2.2 2.2 8.8 8.8
of these, which variations are listed two or more times? || what are the variations noted for all pumps at both 35 and 45 degrees?