RS/YJ/Rule 22-41

rct229/rulesets/ashrae9012019/section22/__init__.py

@@ -36,6 +36,7 @@
     "section22rule38",
     "section22rule39",
     "section22rule40",
+    "section22rule41",
 ]
 
 

rct229/rulesets/ashrae9012019/section22/section22rule41.py

@@ -0,0 +1,27 @@
+from rct229.rule_engine.partial_rule_definition import PartialRuleDefinition
+from rct229.rule_engine.user_baseline_proposed_vals import UserBaselineProposedVals
+from rct229.rulesets.ashrae9012019.ruleset_functions.check_purchased_chw_hhw_status_dict import (
+    check_purchased_chw_hhw_status_dict,
+)
+
+
+class Section22Rule41(PartialRuleDefinition):
+    """Rule 41 of ASHRAE 90.1-2019 Appendix G Section 22 (Chilled water loop)"""
+
+    def __init__(self):
+        super(Section22Rule41, self).__init__(
+            rmrs_used=UserBaselineProposedVals(False, True, False),
+            id="22-41",
+            description="Purchased CHW systems must be modeled with only one external fluid loop in the baseline design.",
+            ruleset_section_title="HVAC - Chiller",
+            standard_section="Section 22 CHW&CW Loop",
+            is_primary_rule=False,
+            rmr_context="ruleset_model_descriptions/0/heat_rejections",
+            manual_check_required_msg="B-RMD IS MODELED WITH PURCHASED CHILLED WATER. VERIFY THAT THERE IS ONLY ONE PURCHASED CHILLED WATER LOOP IN THE BASELINE MODEL.",
+        )
+
+    def rule_check(self, context, calc_vals=None, data=None):
+        rmd_b = context.baseline
+        purchased_chw_hhw_status_dict_b = check_purchased_chw_hhw_status_dict(rmd_b)
+
+        return not purchased_chw_hhw_status_dict_b["purchased_cooling"]