DOI: 10.7941/d1wk8m
title: SVACH - Development of advanced smart ventilation controls for residential applications

description: This study examined the use of zoned ventilation systems using a coupled
 CONTAM/EnergyPlus model for new California dwellings. Several smart
 control strategies were developed with a target of halving
 ventilation-related energy use, largely through reducing dwelling
 ventilation rates based on zone occupancy. The controls were evaluated
 based on the annual energy consumption relative to continuously operating
 non-zoned, code-compliant mechanical ventilation systems. The systems were
 also evaluated from an indoor air quality perspective using the
 equivalency approach, where the annual personal concentration of a
 contaminant for a control strategy is compared to the personal
 concentration that would have occurred using a continuously operating,
 non-zoned system. Individual occupant personal concentrations were
 calculated for the following contaminants of concern: moisture, CO2,
 particles and a generic contaminant. Zonal controls that saved energy by
 reducing outside airflow achieved typical reductions in
 ventilation-related energy of 10 to 30%, compared to the 7% savings from
 the unzoned control. However, this was at the expense of increased
 personal concentrations for some contaminants in most cases. In addition,
 care is required in the design and evaluation of zonal controls, because
 control strategies may reduce exposure to some contaminants while
 increasing exposure to others.
description: This data file represents summary results for 2,967 annual
 co-simulations of EnergyPlus and CONTAM at one-minute time-steps,
 including data outputs addressing zone and whole-dwelling ventilation
 airflows (fan flows, infiltration, exfiltration), zone and personal
 contaminant concentrations (PM<sub>2.5</sub>,
 CO<sub>2</sub>, Generic and water vapor), and energy use. Each
 simulation represents a unique combination of California climate zone (CEC
 CZ 1, 3, 10 and 16), building prototype (apartment, 1-story and 2-story),
 envelope air leakage (0.6, 2 and 3 ACH<sub>50</sub>),
 ventilation fan type/configuration (multi- and single-point configurations
 of exhaust, supply and balanced fans), and ventilation control type (10
 smart control types and 2 baseline types). Detailed descriptions of the
 simulation effort can be found in the project
 final report. Annual, one-minute time-series outputs were
 recorded from EnergyPlus, and each time-series file was post-processed to
 produce a one-line summary of the results. All data pre- and
 post-processing is characterized in detail at the project bitbucket
 repository available here.     
description: Three files are included in this dataset are:
 "SVACH_zonalSims_allCases.csv" is the data
 file containing annual summary output values for each of 2,967
 simulations. Each simulation is represented by a single row, including the
 case data and all corresponding reference data (see column descriptions in
 "dataFileColumnDescriptions.xlsx" and
 in "README.txt"). 
 "dataFileColumnDescriptions.xlsx" contains a field
 representing each column in the data file (n=2,901), along with a variable
 type (input/output) and a human-readable description of the
 variable. "README.txt" describes additional
 details about column names, including alias values in the column names
 spreadsheet.