1. Einar K. Frobom, MBA, PE Wednesday, October 7, 2015
Munters ISMRE & AHRI 920 / ASHRAE
Einar K. Frobom, MBA, PE Wednesday, October 7, 2015

2. Min ISMRE to be adopted by ASHRAE 90.1 Munters’ ISMRE
Agenda
AHRI 920
Min ISMRE to be adopted by ASHRAE 90.1
Munters’ ISMRE

3. AHRI 920

4. AHRI Standards 920 – New Metrics

7. (Cont’d)

8. ASHRAE 90.1 Adoption – Addendum XX

9. ASHRAE 90.1 Adoption – Addendum XX (cont’d)

10. Munters Calculated ISMRE for units without heat recovery

11. Munters Calculated ISMRE for units without heat recovery (cont’d)

12. ASHRAE 90.1 Adoption – Addendum XX (cont’d)

13. Munters Calculated ISMRE for units with heat recovery

14. Munters Calculated ISMRE for units with heat recovery (cont’d)

15. Munters ISMRE vs. ASHRAE90.1 Min ISMRE

16. MRE – ASHRAE Timeline – Munters Technology
ASHRAE redefining yardstick for DOAS efficiency, MRE v. EER
DOAS = DH => MRE defined as LATENT WORK / INPUT POWER (lb/kWh)
ASHRAE DH TC Timeline: AHRI 920 (MRE) Standard is now approved by ASHRAE 90.1 Technical Committee. Issued Public Call for Comments due 10/19. AHRI 920 goal to be published into ASHRAE
Munters DryCool technology MRE will be industry leading:
Key! MRE does not change versus delivered dewpoint
Munters DH technology leading regardless of end game.
95F/78F ambient:
50 ton overcool reheat system: 45, 50, 55 DP => MRE = 4.2
30 ton HCU: 45, 50, 55 DP => MRE = 6.7
80F/73F – part load:
50 ton overcool reheat system: 45, 50, 55 DP => MRE = 5.4
30 ton HCU: 45, 50, 55 DP => MRE = 8.6

17. Questions? 17

18. AHRI – Air-Conditioning, Heating & Refrigeration Institute
(300+ member companies produce over 90% of HVAC/R prod in NA.)