RDS/CML/Rule 22-44

docs/section22/Rule22-44.md

@@ -0,0 +1,40 @@
+# CHW & CW - Rule 22-44  
+
+**Rule ID:** 22-44   
+**Rule Description:** Where part-load performance of chillers in the proposed design is not available, and the design temperature across the condenser is 10°F, the performance curves in Normative Appendix J, as referenced in Table J-1, shall be modeled for the specified chiller.  
+**Rule Assertion:** Proposed RMD = expected value  
+**Appendix G Section:** Table G3.1 #10b Proposed Column 
+
+**Mandatory Rule:** True  
+**Evaluation Context:** Each Chiller  
+**Table Lookup:** 90.1 Appendix J Table J-4  
+**Function Call:**  
+1. is_chiller_performance_app_j()
+
+## Applicability Check:  
+
+- **Check 1:** Get B-RMD system types: `baseline_hvac_system_dict = get_baseline_system_types(B-RMD)`
+
+- Check if B-RMD is modeled with at least one air-side system that is Type-7, 8, 11.1, 11.2, 12, 13, 7b, 8b, 11b, 12b, i.e. with air-side system served by chiller(s), continue to the next applicability check: `if any(sys_type in baseline_hvac_system_dict.keys() for sys_type in ["SYS-7", "SYS-8", "SYS-11.1", "SYS-11.2", "SYS-12", "SYS-13", "SYS-7B", "SYS-8B", "SYS-11B", "SYS-12B"]): NEXT_APPLICABILITY_CHECK`
+
+- Else, rule is not applicable to B-RMD: `else: RULE_NOT_APPLICABLE`
+
+- Get primary and secondary loops for B-RMD: `primary_secondary_loop_dictionary = get_primary_secondary_loops_dict(B_RMD)`
+
+- For each chiller in B_RMD: `for chiller in B_RMD...chillers:`
+  - Store the design temperature across the condenser: `design_temperature_across_condenser = chiller.design_leaving_condenser_temperature - chiiler.design_entering_condenser_temperature` 
+  - Check if chiller is connected to a primary chilled water loop that serves HVAC systems: `if chiller.cooling_loop.id in primary_secondary_loop_dictionary: CHECK_RULE_LOGIC`
+
+    **Rule Assertion:**
+    - Case 1: all lists of missing or non-matching validation points have a length of zero and the design temperature across the condenser is 10F: PASS: `if is_chiller_performance_app_j(chiller) and design_temperature_across_condenser == 10: PASS`
+    - Case 2: all lists of missing or non-matching validation points have a length of zero and the design temperature across the condenser is NOT 10F: `elif is_chiller_performance_app_j(chiller) and design_temperature_across_condenser != 10: FAIL`
+    - Case 3: else when all output data is present for the chiller UNDETERMINED: `else: UNDETERMINED and raise_message "FAIL unless manufacturer full- and part-load data is provided to support the modeled curves.`  
+    - Note to RDS team - if there is missing output data the outcome is also UNDETERMINED with a message indicating that the modeled performance curves could not be evaluated.
+
+**Notes:**
+1. Can we add chiller.design_leaving_condenser_temperature to th schema?
+2. Update is_chiller_performance_app_j() to take in which table to reference?
+3. This rule needs to be added to the rule Workbook
+
+
+**[Back](../_toc.md)**