RS/YJ/Rule 23-4

docs/section23/Rule23-4.md

@@ -5,15 +5,15 @@
 **Mandatory Rule:** False  
 **Rule ID:** 23-4  
 **Rule Description:** Baseline systems 5 & 7 serving lab spaces per G3.1.1c shall reduce lab exhaust and makeup air during unoccupied periods to 50% of zone peak airflow, the minimum outdoor airflow, or rate required to comply with minimum accreditation standards whichever is larger.
-**Rule Assertion:** B-RMR = expected value  
+**Rule Assertion:** B-RMD = expected value  
 **Appendix G Section:** Section 23 Air-side  
 **90.1 Section Reference:** Exception to G3.1.3.13 VAV Minimum Flow Set Points (Systems 5 and 7)  
 **Data Lookup:** None  
 **Evaluation Context:** Building  
 
 **Applicability Checks:**  
 
-1. B-RMR is modeled with at least one air-side system that is Type-5 or 7 and serves only lab spaces.  
+1. B-RMD is modeled with at least one air-side system that is Type-5 or 7 and serves only lab spaces.  
 
 **Function Calls:**  
 
@@ -23,18 +23,20 @@
 
 **Applicability Checks:**  
 - create a list of the target system types: `APPLICABLE_SYS_TYPES = [HVAC_SYS.SYS_5, HVAC_SYS.SYS_7]`
-- Get B-RMR system types: `baseline_hvac_system_dict = get_baseline_system_types(B-RMR)`
+- Get B-RMD system types: `baseline_hvac_system_dict = get_baseline_system_types(B-RMD)`
+- Get climate zone: `climate_zone_b = ASHRAE229.weather.climate_zone`    
+- Get is_leap_year: `is_leap_year_b = ASHRAE229.calendar.is_leap_year`  
 
 - make a list of hvac system type ids for systems that are one of 5 or 7: `hvac_sys_5_or_7_list = []`
 - loop through the applicable system types: `for target_sys_type in APPLICABLE_SYS_TYPES:`
     - and loop through the baseline_system_types_dict to check the system types of the baseline systems: `for system_type in baseline_system_types_dict:`
         - do baseline_system_type_compare to determine whether the baseline_system_type is the applicable_system_type: `if((baseline_system_type_compare(system_type, target_sys_type, false)):`
             - the systems in the list: baseline_system_types_dict[system_type] are either sys-5 or 7, add them to hvac_sys_5_or_7_list: `hvac_sys_5_or_7_list.extend(baseline_system_types_dict[system_type])`
-- use the function get_lab_zone_hvac_systems to get a list of systems serving lab zones: `hvac_systems_serving_lab_zones = get_lab_zone_hvac_systems(B-RMR)`
+- use the function get_lab_zone_hvac_systems to get a list of systems serving lab zones: `hvac_systems_serving_lab_zones = get_lab_zone_hvac_systems(B-RMD, P-RMD, climate_zone, is_leap_year)`
 - we'll iterate through the hvac systems serving labs.  hvac_systems_serving_lab_zones has two keys - one indicating "LAB_ZONES_ONLY" and one indicating "LAB_AND_OTHER", because this rule references G3.1.1c, which requires systems to serve only lab zones, we will concern ourselves only with "LAB_ZONES_ONLY": `for hvac_system_id in hvac_systems_serving_lab_zones["LAB_ZONES_ONLY"]:`
       - now check if this system is a System 5 or System 7 by looking for the hvac_system_id in hvac_sys_5_or_7_list, it is, the rule is applicable: `if(hvac_system_id in hvac_sys_5_or_7_list): UNDETERMINED`
 
-      - Else, rule is not applicable to B-RMR: `else: RULE_NOT_APPLICABLE`
+      - Else, rule is not applicable to B-RMD: `else: RULE_NOT_APPLICABLE`
 
 **Notes:**
 

rct229/rulesets/ashrae9012019/section23/__init__.py

@@ -5,6 +5,7 @@
     "section23rule1",
     "section23rule2",
     "section23rule3",
+    "section23rule4",
     "section23rule6",
     "section23rule7",
     "section23rule8",

rct229/rulesets/ashrae9012019/section23/section23rule4.py

@@ -0,0 +1,99 @@
+from rct229.rule_engine.partial_rule_definition import PartialRuleDefinition
+from rct229.rule_engine.rule_list_indexed_base import RuleDefinitionListIndexedBase
+from rct229.rule_engine.ruleset_model_factory import produce_ruleset_model_instance
+from rct229.rulesets.ashrae9012019 import BASELINE_0, PROPOSED
+from rct229.rulesets.ashrae9012019.ruleset_functions.baseline_system_type_compare import (
+    baseline_system_type_compare,
+)
+from rct229.rulesets.ashrae9012019.ruleset_functions.baseline_systems.baseline_system_util import (
+    HVAC_SYS,
+)
+from rct229.rulesets.ashrae9012019.ruleset_functions.get_baseline_system_types import (
+    get_baseline_system_types,
+)
+from rct229.rulesets.ashrae9012019.ruleset_functions.get_lab_zone_hvac_systems import (
+    get_lab_zone_hvac_systems,
+)
+
+APPLICABLE_SYS_TYPES = [
+    HVAC_SYS.SYS_5,
+    HVAC_SYS.SYS_7,
+]
+
+
+class Section23Rule4(RuleDefinitionListIndexedBase):
+    """Rule 4 of ASHRAE 90.1-2019 Appendix G Section 23 (Air-side)"""
+
+    def __init__(self):
+        super(Section23Rule4, self).__init__(
+            rmrs_used=produce_ruleset_model_instance(
+                USER=False, BASELINE_0=True, PROPOSED=True
+            ),
+            each_rule=Section23Rule4.RuleSetModelInstanceRule(),
+            index_rmr=BASELINE_0,
+            id="23-4",
+            description="Baseline systems 5 & 7 serving lab spaces per G3.1.1c shall reduce lab exhaust and makeup air during unoccupied periods to 50% of zone peak airflow, the minimum outdoor airflow, or rate required to comply with minimum accreditation standards whichever is larger.",
+            ruleset_section_title="HVAC - Airside",
+            standard_section="Exception to G3.1.3.13 VAV Minimum Flow Set Points (Systems 5 and 7)",
+            is_primary_rule=False,
+            list_path="ruleset_model_descriptions[0]",
+            required_fields={
+                "$": ["calendar", "weather"],
+                "weather": ["climate_zone"],
+                "calendar": ["is_leap_year"],
+            },
+            data_items={
+                "climate_zone_b": (BASELINE_0, "weather/climate_zone"),
+                "is_leap_year_b": (BASELINE_0, "calendar/is_leap_year"),
+            },
+        )
+
+    class RuleSetModelInstanceRule(PartialRuleDefinition):
+        def __init__(self):
+            super(Section23Rule4.RuleSetModelInstanceRule, self).__init__(
+                rmrs_used=produce_ruleset_model_instance(
+                    USER=False, BASELINE_0=True, PROPOSED=True
+                ),
+            )
+
+            def get_calc_vals(self, context, data=None):
+                rmd_b = context.BASELINE_0
+                rmd_p = context.PROPOSED
+                climate_zone_b = data["climate_zone_b"]
+                is_leap_year_b = data["is_leap_year_b"]
+
+                baseline_system_types_dict = get_baseline_system_types(rmd_b)
+
+                hvac_sys_5_or_7_list = [
+                    system_type
+                    for system_type in baseline_system_types_dict
+                    for applicable_sys_type in APPLICABLE_SYS_TYPES
+                    if baseline_system_type_compare(
+                        system_type, applicable_sys_type, False
+                    )
+                ]
+
+                hvac_systems_serving_lab_zones = get_lab_zone_hvac_systems(
+                    rmd_b, rmd_p, climate_zone_b, is_leap_year_b
+                )
+
+                return {
+                    "hvac_sys_5_or_7_list": hvac_sys_5_or_7_list,
+                    "hvac_systems_serving_lab_zones": hvac_systems_serving_lab_zones,
+                }
+
+            def applicability_check(self, context, calc_vals, data):
+                hvac_sys_5_or_7_list = calc_vals["hvac_sys_5_or_7_list"]
+                hvac_systems_serving_lab_zones = calc_vals[
+                    "hvac_systems_serving_lab_zones"
+                ]
+
+                return any(
+                    [
+                        hvac_sys_id
+                        for hvac_sys_id in hvac_systems_serving_lab_zones[
+                            "lab_zones_only"
+                        ]
+                        if hvac_sys_id in hvac_sys_5_or_7_list
+                    ]
+                )